I have to disagree with your take on "High critic score / low audience score". There is a swathe of more challenging, experimental, or art house movies that fall into this category. These reviews fill the void where another audience only place like imdb falls short.

Low critic score / high audience score = Bad, but enjoyable for the masses

Maybe we need to define "bad," because I would argue an enjoyable movie is good. Movies don't need to be avant garde to be good. They just need to be entertaining.

I wish this were true, but the critics as a polity just don't have a sophisticated palate. Many individual critics much like many general audience members do, I'm sure.

This sounds appealingly highbrow, but it's not particularly accurate in my experience. I think the critics often get into their own bizarre headspace that nobody else cares about.

this feels like an interview question

Here is a better heuristic:

High critic score / low audience score = Avant garde type films. Might go over your head

Low critic score / high audience score = Maybe fun but forgettable movie

I feel pretty confident that Captain Marvel, Emilia Perez, Spy Kids, Sausage Party, The Last Jedi, and Ghostbusters 2016 aren't at much risk of going over the heads of audiences, but you're entitled to your opinion if you think they count as avant garde cinema

Hey it's a heuristic so ymmv

"politically motivated reviews"