Rotten tomatoes is junk IMHO. The divergence between critics and audiences is becoming very common.
Critics like arty fartie indie movies, historical dramas type movies.
The telling critical reception IMHO was the premiere. Disney's hand picked friendly reviewers gave it mixed reviews.
The other problem is a lot of reviews are simple up or downs. There's a big difference between a 60% movie and 90% IMHO but both count as positive.
Even the worst Star Wars movies (AotC, TPM) still count as good with simple ups and downs.
I'm not sure what counts as a one star movie. Highlander 2 maybe, some Netflix ones.
TLJ is probably plotted better, people don't like the way it treated Luke and other decisions. Probably should have been the third movie not second.
Plot and pacing RoS is a mess but it's more fun in a way.