If he truly spoke his mind, told his followers what he really thinks of them, he would lose his base, his credibility, and people wouldn’t bank on him so far.

But he speaks his mind only to some small extent which empowers his base, builds his credibility by dehumanizing their collective enemies, and so people with those shared values bank on him.

I don’t think an idiot would act like that. I think an idiot would ruin their fans on both sides of the political spectrum. This is just a man visibly picking a (horrific) side.