What you are talking about? Primarily RT is just a quick reference to tell if a movie is good or bad. That what is it was before that is what is now.
Black Panther is a superhero movie, Green Book is a drama. Black Panther is a better superhero movie than Green Book is at being a drama. It never occurs you to the movies are judged on different scales and humans are complex enough to judge movies for what they are trying to do. Black Panther has higher enjoyability rate at what it is trying to than Green Book at what it is trying to do. Being the best scary movie has a whole different requirement scale than being the best sport fighting movie. Comedy can have a horrible plot but make you laugh the whole time that is a good comedy movie. A drama can have excellent acting, solid story structure, and great cinematography and be boring as grass growing and fail to entertain the audience. You can be a better technical movie but fail to entertain the audience. All-time great movies do both but good movies can do just one between technical mastery and being entertaining and called a good movie.
Rotten tomatoes is just fine as a tool, It provides all the relevant info needed for judging a movie. If you want to take a deep look look at top critic for a movie and then you click on review and read a bunch of knowledgable people opinions to form a solid opinion. You have an audience score a quick feel of what the audience thinks, You have an overall score a quick feel for what critic and bloggers think. RT is a pass-fail system which is just designed to get a consensus basically how watchable is a movie. The score is not an overall comparison between movies on technical merit. If you talking about one thing on RT you don't understand how to use it.