cant say ive seen it yet, but im not averse to spoilers, and ive read plenty of Onliine Rants abt the issue
i think a large issue is the sidelining of finn - last movie, he was promoted as the new lead of the series, john boyega gave a stunning performance, and being so charismatic off camera as well, he won a massive fanbase. ntm people being really glad to have another black lead in star wars, which is rare, yknow? so his treatment in tlj has really upset a lot of people who feel betrayed and let down bc they were all here for finn. (personally, i am literally just here for finn, i didnt care about starwars til i knew john boyega was in it. i loved him ever since attack the block. so its a bummer)
theres also apparently a lot of bad characterisation of both luke and leia, which i wont get into bc #spoilers and i cant say i know the full extent, but it ticked people off.
cant say what else... im seeing it next week, then ill have a fuller opinion instead of referring to other peoples opinions.