I don't actually think he is.
He would have had to kept up the act for well over a decade.
I mean, he claims Obama is literally Satan that wants to send all gun owners to concentration camps. And that all liberals are bloodthirsty commies that have told him "behind the scenes" that they want to murder everybody. And that every single mass shooting has been a false flag to start a civil/race war.
The guy is insane. And he has millions of viewers.
Yet people are more concerned about a few black students and feminists saying they want a "safe space" on college campus.