I would say persuasive bullshitters probably includes the perhaps small group of people who have realized that everything people say (themselves included) conta

I would say persuasive bullshitters probably includes the perhaps small group of people who have realized that everything people say (themselves included) contains at least some small measure of bullshit (however you define it), and that it isn't necessarily intentional or malicious, and that it doesn't fully invalidate the statement. Thus, they are willing to confess to engaging in bullshitters, and while quick to recognize it in others, they are generous enough to play along for what truth might lie within.