If you've watched him over a long period of time, you'll know that pretty much his entire life he has been gripped by an obsession with evil (hence his fixation on Stalin, Hitler, Dostoevsky, etc.). He has this deep-seated fear that the most horrific events in human history could happen again, that there's something about human nature itself that allows these atrocities to happen, so if we don't play our cards right, there's nothing stopping the triumph of evil.
Once you know this about him, his positions suddenly start to make sense. For example, he rails against "cultural Marxism" and postmodernism because he sees these bogeymen as harbingers of a society disintegrating headfirst into atrocity and evil. And if you truly believe such an extreme thing, then why wouldn't you show yourself in fierce opposition? Wouldn't you even have a moral obligation to do so?
Of course, I think he's somewhat hallucinating these concepts (it's pretty clear he hasn't dedicated a lot of time to actually reading Marx), but I see no indication that it's a grift.
That's the rational explanation, at least, but the simpler explanation is that I can see it in his eyes, to the point where even just watching him speak is sometimes hard for me because of the depth of pain in his eyes. This is a man who has known suffering.
