Can't help being suspicious of who funds such "authoritative" studies. You remember the decades when the sugar industry funded all the studies regarding the obesity epidemic? Yeah, foxes guarding the henhouse.
Warfare comes in many different forms: Hand-to-hand combat, Surface-to-air missiles, psychological warfare... Pornography & social isolation is a whole next level of warfare. Breaking humans down from the root at the individual level, reducing birthrates, thereby reducing population.
Y'all just keep wanking though. They've got you right there where they want you. In the palm of your own hand.