Anti-intellectual is indeed not the same as stupid, far from it. I think a lot of people miss that anti-intellectualism is very common in tech circles, where it takes the form of contempt for the humanities and a worship of (rather than understanding of) science.
"We've solved human civilisation!" they say, ignoring the writers who tackled the problem centuries before and warned them of the mistakes they're making.
"We've built a machine god!" they say, ignoring the researchers who understand the thing well enough to explain to them that no, they haven't.
I've noticed that a lot of this sort of tech person is also a fan of Trump (or his equivalents in other countries.)