Yes but the issue people are taking with them is that they aren't funny. The actual jokes themselves, when he actually makes them, aren't funny, and his character's schtick being "I'm going to nitpick things in a way that requires me to pretend entire scenes don't exist" isn't a good one! You might say... we're sinning it.
While I agree with your point, let's not reduce reduce actual critique to "sinning it" (and to be clear I'm not really criticizing you here, just using this as a jumping off point). What people are pointing out is that the videos are either lazy humor or lazy criticism. If the point is to be funny while pointing pointing out the foibles and failures of movies, MST3K did it so much better 30 years ago. If the point is to provide criticism, then inaccurate nitpicking is possibly the laziest, shittiest form of criticism around.
Also, for everyone saying "it's a joke!" Being a joke doesn't make it immune to criticism, and it's no good to just say "well, some people find it funny, so whatever". People find lots of things funny, and it's still perfectly valid to critique them. Grown Ups 2 is not immune from criticism and neither is Cinema Sins.
Additionally, I think it's really disingenuous to pass it all off as humor or satire when there's plenty of evidence that the creator and his fans take at least some of these critiques seriously. And if we're taking them seriously at all, then we have to be able to point out inaccuracies (which honestly I think misses the point) or (more importantly) point out how shallow and reductive this form of criticism is.
Not a very creative match cut. The movie was just bad all around but regarding Cinema Sins I enjoy it, even of movies I love, it's not necessarily funny mind you but I just don't get the big deal.
The response to why this is a "big deal" for some of us is already in the thread:
On the one hand, fuck Cinemasins
On the other hand, they feed off the obnoxious, lazy, hyperbolic, thoughtless nit-picking of trying to be smarter than the movie you're watching that ALREADY exists in nerd film culture and thus pervades a lot of Internet movie discussion (please note the fact that i said "nerd film" instead of "film nerd" because that's super fucking important). Cinemasins is a symptom of why I really hate talking about movies on the Internet a lot of the time rather than, like, a source. Though they don't exactly help.
It's not so much that Cinema Sins is itself a big deal, it's that what it's symptomatic of is an incredibly common and frustrating form of film criticism on the internet. It's a form of criticism that prioritizes discussing plot holes or inconsistencies more than discussing character, plot, tone or theme. It's a form of criticism that tries to come up with an objective way to tell if a movie is good or not but has no actual understanding of what makes films work.
And yes, I'm sure people will say I'm taking this too seriously, but it's an epidemic on the internet and Cinema Sins is (possibly) the most popular expression of it.