They buried the lede here. > Sexual activity was largely unchanged among unmarried women, along with no notable decline among gay men, researchers reported. Basically sex is following the pattern of wealth. Men as a group aren't having less sex, instead there's a winner take all effect where a small number of men are having a lot of sex with a lot of women while a large number of men are having little to no sex. It'l…
And if I were one of these women, I'd probably do the same thing. Even if you can't marry a hottie, if you can have sex with one a few times, that still sounds like fun.
The other guys, who are "normal", and certainly not homely, just don't go out at all, even at what I would consider to be a fairly advanced age. I suspect some are still virgins. Instead, video games and pot.
Since I am homely, this is exactly what I'd be doing if I were young now, given society's recent barrage of disparagement towards men. And especially if I knew someone like adult-me who got absolutely crushed by alimony.
I foresee no particular solution. I think we'll just follow Japan and South Korea. Other societies with different norms will simply displace us. Which I think is fine.