I see no reason why it would change unless the legal age to engage in contractual relationships change. Even in regular hollywood movies, if an actress is under 18 and the movie calls for a nude scene or a breast shot the parents of the actress must provide consent.
Exactly my point. Bawney Fwank is one of the many influential perverts working on this. If the legal age for consensual sex is lowered you can expect the legal age for participation in porn to be lowered. My point is that vice, in and of itself, seeks the slippery slope. Without regulation, it becomes like Amsterdam. Some people have no problem with this, others do. And so we all push for the principles we embrace.