From reading the article, it seems that the lack of sex is due to anti-social behavior. Kids are more chronically online, living with their parents without a job or in-person social life, and compare sex to what they see in porn; not really a positive...
Discussion
That statement only makes sense if you consider teenagers sleeping around to be anything other than anti-social behavior.
Also love the way you put "hangs out with their family instead of going out and getting shitfaced and laid by randos" and "is totally grossed out watching the same degenerate stuff we're all frantically whacking it to", in the antisocial category.
Okay.