I think he knowingly engages in sophistry, which is basically the same thing. It's "oh, if I trip up this guy with logic, that means I win!!!! And don't have to think about the veracity of his claims for another day!!!!". I'm sure there is a ton of cognitive dissonance at play but in the end, when you are this topped up with poop from the rear end of a male cow, the topic of "yes, but does he really believe it" barely makes sense.