It's probably impossible to get reliable statistics about that given how both groups are trying to keep everything secret. But you can consider how many paedophiles there are vs how many horny teenagers there are. Based on that it would be extremely surprising if he was wrong.

The real question is what happens when a horny teenager sends another a nude. There definitely have been insane cases where they get stitched up for creating child porn. I don't know if that's the normal outcome today though.