Why? Dude's an idiot who's been preaching about the dangers of post-modernis cultural marxism, and when put on the spot and asked to describe what it was or mention prominent proponents, he couldn't come up with any thing or any one. The big bad marxism that he was so familiar with? Turns down he's knowledge went no further than reading the Communist Manifesto, which is very much Communism for Dummies. If he had any credibility left before his debate with Zizek, he sure as feck didn't afterwards.
He rose to prominence completely misunderstanding a proposed law because he's, well, an idiot. Everyone and their grandmother was telling him what he was claiming would happen couldn't happen, but he persisted. He makes a living telling people how to live their lives, but fails completely to set any kind of example, instead opting to do the opposite. Remember when he argued that equality can't and shouldn't be enforced by law, and when the civil rights era and the laws resulting from the social unrest at the time was brought up, he had to concede that maybe sometimes you have to enforce equality by law (and has then gone on to say that you shouldn't enforce equality by law, because of course he did.) Then there was that time where he did an interview, and wrote an angry blog post about the unpleasant young man who had interviewed him. Turned out the young man had done research and knew what he was talking about, so he was able to challenge JorP, and JorP didn't like that one bit. His views on women and their role in society are outdated, to put it mildly, and he sounds like Kermit the Frog.
He's a charlatan, same as the rest of them. Having a doctorate counts for nothing when you manage to make an absolute ass of yourself every time you open your mouth.