My hypothesis is that the sort of people who’d engage on persuasive bullshit cares less about truth value of the statements, and that’s what giving them a hard time asserting the truth value of what others say.

Hontestly speaking. This viewpoint isn't completely false. In some contextes, other aspects are more important than just straight up true value. For instances, some people seems to be used to judge a view not on the merit of it's reasons, but because of the socially consequences which would arise if the view would hold by a lage mayority. Even if we agree that such points should be irrelevant for a rational discussion, we already know that not all discussions are rational.