Don't me started on how stupid the ratings of video games got started.This is a non-issue for the RPG world. Law enforcement is going to focus on products aimed at children who are in the chewing age group - not those in pre-Algebra classes.
If a particularly insane Attorney General decided to chase down D&D books, it would be a no-brainer to just slap 13+ stickers on everything.
And there would be no lost sales. Parents don't check ratings on video games, let alone wonder if the new Monster Manual got certified for lead.