Contrarians, yes. Unthinking ones, not at all. They poison all attempts at genuine critique and contribute to ideological inertia. Like the stupid kid with authority problems saying public school is bullshit, or your senile grandparents saying phones are bad. Yes, if you are sharp and rhizomatic you can isolate the truth through their possible ulterior motives (being a dipshit or having juvenoia respectively) but this is difficult to exercise consistently. I understand the spirit of having catfish in the tank to keep us vigilant, but that can be done even better with actual debate by thinking people.
(Also what does TPTB mean? ty in advance)