The worst news I've seen about AI was a study that said the major ones get 40% of their references from Reddit (I don't know how they determined that). That explains the cloying way it tries to be friendly and supportive, too.

I saw someone reference this today and the question I had was whether this counted the trillions of words accrued from books and other sources. i.e. is it 40%? Or 40% of what they can find a direct attribution link for?