I think that's part of it: anti-intellectualism. A distrust of "experts" telling them their life is better or will be better if they vote a certain way because of statistics/ studies when they feel the opposite from their actual experience. Of course being told they are stupid, a cult and the rest for feeling the way they do doesn't help, either. Also ties into the "don't stand out being smart" attitude referred to earlier in the thread and leads to the "own the libs attitude" also referred to in here.
There are other issues, obviously.
Anyway, just remember: "It's finished at Georgia, Trump has done all he can .... Harris is still alive here ....... Pennsylvania, Michigaaaaaaaaaaaaaaan. I swear you'll never see anything like this ever again. So watch it, drink it in."
Let's hope so.