It really bugs me how so many people on the internet these days seem to have so little capacity for nuanced opinions on things. Something is always either fucking garbage (usually a 7-8 out of 10 which is above average) or the greatest thing since Jesus Christ sliced up a loaf of bread.
Fallout 4 is the best looking game Bethesda has ever made. On PC on the highest settings, it will most likely look pretty good, but on console it's 30fps and will almost certainly have reduced draw distances, minimal shadows at distance, and so on.
Does this make the game look like shit? No, it still looks solid. I think people who say games like Fallout look like shit must have forgotten what shit looks like.
At the end of the day, Bethesda decided to keep using their Gamebryo engine which undoubtedly limited them in many ways, but perhaps they decided early on that it would be more important for modders to be able to jump right in from modding their previous titles, or maybe the fact that Fallout 4 began development a couple years before this generation of consoles were released had a negative effect on the graphics, but when all is said and done, this is what we got.
It's not eye-meltingly gorgeous, but it doesn't look like shit either, and to be perfectly honest, I am so desperate for a new Fallout game that I would be almost as excited for Fallout 4 as I am now if the graphics were identical to Fallout 3's.