In order for this to be true, the total quantity of user ratings for TLJ would probably have to be higher overall; you would need lots of negative votes to cancel out the positive votes, which would result in a ballooning of the total number. However, TLJ simply didn't receive very many positive ratings from fans relatively speaking. (This is all in regards to the RT score, BTW).Sure, if you ignore the publically known attack on the site by 4chan. But lets not let facts get in the way of your narrative.
The mixed reaction to the film isn't just on RT. You see the same thing on metacritic. On Amazon, the films has as many 1 star ratings as it does 5 star ratings, and again the total amount of user ratings isn't all that high.
Anecdotally, everywhere I go I see a mixed reaction to the film. Much more so than with TFA.