I haven't seen it. I saw The Force Awakens, and I saw some of Rogue One on a plane one time but I didn't finish it at the time and felt no particular need to seek it out and finish it at a later date.
The Last Jedi, I didn't avoid or anything, I just wasn't that bothered. However, having read a few people moaning about it and gleaning some of the stuff that happens... well, I got the impression that people were pissed off cos they had the idea that after the Return of the Jedi - when the Emperor and Vader had been defeated, the Death Star destroyed and so on - Luke, Leia, Solo etc had ridden off into the sunset and lived happily ever after... BUT now it was revealed that actually that wasn't the case, they had become miserable and directionless alcoholics (or the space equivalent of that) and Luke in particular instead of being a wise and content aged Jedi was in fact a bitter old git. And they thought that that fucked with their enjoyment of the original film and - without getting into the debate about "who owns the film" again - to my surprise, I actually felt kinda the same. It would be like discovering something about my childhood was very different (worse) from how I thought of it at the time, and, although it couldn't change the way that I had experienced and enjoyed it, it could taint the memory.