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…
One can't simply say "women prefer men with higher socioeconomic status" because it sounds right, and I'm not saying that this isn't studied somewhere, just that when making conclusions about a study, if that factor wasn't included in the study, we shouldn't assume it then is one of the conclusions of the study and start connecting dots with other studies just because it feels right.