I don't fully trust the RT score, there was those Facebook groups that claimed they used bots to lower the score as they hated "forced diversity" and "the removal of the EU" (criticisms of the movie are fine, but I find both of these ridiculous especially the former). IMDb's score is much higher for example.
It's not that your criticisms can't be valid, but some of them I feel could easily apply to so many films including the OT if you looked hard enough and I would rather enjoy movies than not enjoy them. Yes, there are bad films to me, but I would rather focus on the positives over a film than the negatives. I Hate Everything did a wonderful video on The Last Jedi and he talks how he thinks modern audiences are starting to get too cynical in how they look at movies. Rather than trying to appreciate the larger picture of the movie, they would rather focus on finding every little fault in it but also failing to use that much scrutiny towards the positives. As he points out, CinemaSins and the like are meant to be comedic (CinemaSins makes this clear countless times throughout his videos), they are not made to actually be how you look at films.
I wouldn't say The Last Jedi is perfect, but I did see 38 films last year and it was my 4th favorite film of the year (my top 10 going from #10 to #1 being Kong: Skull Island, Your Name, Three Billboards Outside Ebbing Missouri, A Silent Voice, Get Out, War for the Planet of the Apes, TLJ, Guardians of the Galaxy Vol. 2, Blade Runner 2049, and Logan). If there are some criticisms they would be: Finn and Rose at the casino planet (only there though, I enjoyed their part on Snoke's ship) was average, but not bad (certainly above SW Ep. 1 and most of 2*) but definitely the weakest section of the film, but it does last like 8-9 minutes tops. I do think Holdo should have ultimately told Poe everything BUT I can sympathize with her somewhat based on Poe's lack of emotional restraint. DJ was a little hard to understand at times but now that the film is out on video with the option of subtitles it's less of an issue (and I do appreciate the rare occasional character who doesn't speak perfectly since the world isn't populated only by people who speak clearly all the time). The deleted bit with Finn accusing Phasma of betraying the First Order and her shooting the stormtroopers should have been left in (only that part, the actual theatrical version of her fight with Finn was far better looking than the deleted version) although I'm willing to let it slide if she ends up alive in 9 (and hey, Ep. 6 wasted Boba Fett in a lot of people's minds).
I was hoping for some exploration on the possibility of Grey Jedi BUT I do realize just because a movie didn't go the route I thought would happen makes it bad. I mean, I predicted Kylo would kill Snoke and take control of the First Order in this film as that made perfect sense to me, someone who aspires to be like Vader would likely kill his master but since you don't want to repeat Return of the Jedi it would result in Kylo falling further into darkness. But quite a few of my predictions were off and that doesn't bother me.
All of this pales in comparison to what the film did achieve for me. The intense first dogfight in the movie with the heroes barely destroying the Dreadnought (and the nice touch of the First Order officer giving Paige's ship a look of respect as he dies). The interesting new direction for Luke with what is arguably Mark Hammil's greatest performance. Speaking of, Adam Driver goes from good in 7 (but mainly with the mask on, with it off he felt kinda awkward in his performance) to an excellent performance throughout the whole film. The interesting dynamic between Rey and Kylo in their Force-connected talks (although man, did Reylo shippers start getting arrogant because of this, they act like you're ridiculous if you interpret their moments as platonic). Certain beautiful visual moments at the Jedi Temple like the distant shot of Rey training as Luke looks on, or the infinite Reys in the cave (and a clever conclusion to the mystery, as Rey asks to see her parents but sees herself. As Kylo tells her later, she had fallen into her own lie about who her parents were so the answer she was looking for was in her the whole time and the cave visually represents that) and others elsewhere like Holdo ramming Snoke's Ship or Leia staring ahead before they close the door on Crait, it's a visually gorgeous film. Kylo's clever method of betraying Snoke (convenient the pieces were there for him to do so, but virtually all of fiction uses conveniences). Rey and Kylo's intense battle of the guard. Luke's heroic walk as he goes outside and everyone looks in awe, and how he proceeds to completely humiliate Kylo, allow the Resistance to escape, and inspire the galaxy once again. Rey and Finn's emotional reunion showing that Kylo was wrong, Rey is not alone. Luke passing away peacefully as his tale comes full circle, looking at the twin suns. The final shot of the boy staring into the galaxy with dreams in his head inspired by what Luke has done for all the people. And of course, all accompanied by John Williams bringing his A game with another fantastic musical score.
I just find it sad that so many people can't appreciate the positives of the film, and I don't think that blame rests with anyone involved with the film, it's just the way some people are looking at movies nowadays. I had a talk with my brother-in-law where he said he thought Guardians of the Galaxy Vol. 2 was pretty weak. After I talked about so many moments of the movies that made me laugh, smile, warmed my heart, or made me tear up, he admitted he had honestly forgotten quite a few of those. He felt he should rewatch it as he felt he let the things that didn't work for him completely overshadow what did work for him. I think a lot of people nowadays have this issue. There's too many absolutes, films are either terrific or terrible and certain people seem incapable of putting a film anywhere between. Not everyone certainly, but it does strike me as a problem with modern movie audiences.
*which are films (Ep. 1 and 2 that is in case you miss the asterisk) littered by some of the most bland acting in a major Hollywood blockbuster ever, a complete lack of suspense as most of the movies show the Jedi calmly owning everything (compare to the new films which has actors able to emote more and show them clearly stressed in their fights), the fact that virtually all of Episode 1 adds nothing to the story (which is why I never understood 2 being considered the worst, it at least had relevance even if some was executed poorly, primarily the Anakin/Padme parts, Obi-Wan's section offered an interesting mystery and Ewan McGregor is like the one actor in the prequels who gave us a good performance. 1 should have removed Qui Gon as he is unnecessary, the focus should always have been on the bond between Anakin, Obi-Wan, and Padme but by wasting practically an entire movie focused on a character who dies at the end and whose death doesn't really affect the character development of the others at all, they should have had Obi-Wan as his sole mentor from the start), and the fact that Ep. 1 (not 2 or 3, they toned it down after 1) features the actual Mary Sue of the series. I mean, I find a woman in her 20's capable of flying a ship (and people obsess over this, but oh man, it lets her wipe out TWO fighters and offer Han some advice, hardly that impactful compared to what Luke and Anakin did in their ships), wielding a staff (which gives her familiarity with hand weapons so her learning a lightsaber quickly didn't seem unreasonable to me), figuring out a mind trick (Luke also figured out Force Grab at the start of 5 with no guidance), not getting Force mindread (even though Obi-Wan flat out says it won't work on weak-minded people so anyone Force-sensitive would have been able to resist Kylo, but a master like Snoke was able to mind read her), beating a dude with a major injury in his leg (I mean, FINN could have been able to beat Kylo honestly, but I'll chalk this up to Force improves your combat somewhat even though we know the Force is only so relevant to lightsaber proficiency as Grievous was a beast with his lightsabers), and knowing a second language (I mean, Jakku seemed to have a lot of aliens on it, I could believe she's had to learn a few languages to get by).
I find that more reasonable than the 9 year old boy (to emphasize, NINE YEARS OLD) who is a slave thus should have limited time for activities outside of working for Watto but yet he has built his own podracer, already participated in a few races and not died despite how deadly we see it is, wins a podrace against seasoned pros and despite having a delayed start due to Watto's sabotage, can also fly a Naboo fighter somewhat competently (no Anakin, this is not podracing, I refuse to believe the experience of using a podracer give you enough skill to actually fly a fighter, plus what kind of fighter was this that a kid could see what he was doing? Was a Jawa using that one?) which he proceeds to use to win practically the entire war by himself by blowing up the mothership by himself which disables all the droids (it's irrelevant if it was by accident, it's still convoluted), had the Force potential to surpass Yoda, and is the center of a prophecy. Like, GEEZ. Are we sure if we look into his eyes hard enough the cure for cancer won't be there, wouldn't surprise me at this rate. Yeah, Vader was a deadly warrior, but the OT had no reason to make me believe he was so ridiculously special on such a high scale.
And to be clear, just like with TLJ, I'll also address positives. Ep 1 has Darth Maul and a great musical score. Ep 2 has an interesting story when it's focused on Obi-Wan and the vast reduction of Jar Jar's presence was highly appreciated. Both films have quite lovely looking location design even if the CGI aged poorly. Episode 1 is a weak film but it's not one of the worst movies ever by any stretch of the imagination (I mean, in terms of blockbuster films, Batman and Robin came out 2 years before that, so let's keep things in perspective) and 2 is adequate, a film that has plenty that is fairly good (Obi-Wan's parts) and plenty that is not so good (Anakin and Padme's parts).