You might enjoy Embrace The Void podcast episode on cheap talk.

I think the closest thing to a good answer would have to deal with discourse norms. Putting some boundaries for asking questions is arguably good, actually, if the goal is to foster some kind of understanding. Especially if the norms are set up so that every answer must be up to a demanding standard, an easy way to try to control the discourse is just asking questions, since it's a cheap tactic.

With teens though, you probably should cut some slack. Growing up in a bullshit world necessarily leads to bullshitting in the people growing up.