Jordan Peterson goes on Rogan for the same reason Douglas Murray went on; to convince him not to platform views contrary to Israel. Murray gets humiliated, so they send in Peterson. Rather than make a case for Israel, Peterson decides to make the ridiculous claim that anyone critical of Israel is a cluster B psychopath. Unable to counter their position, Peterson resorts to an all inclusive ad hominem. His credibility, already in tatters, is now objectively shattered.