I don't know, I definitely wouldn't discount it.
My claim is about a specific phenomenon of human behaviour which has acted upon humanity for milenia. Not a specific generation.
There's variance and other factors involved, porn being a major one. If one generated is behaviourally castrated by Virtual Reality headsets and AI girlfriends, then I'd venture a guess that those that do reproduce will have children that tend towards inheriting an inmunity against the event that wiped out their competing genes.
So yeah, this might take more than one generation, might not, maybe this generation is economically dominated and does not have chidlren or even go out due to debt, work, and poverty, but who knows, maybe something something happens and that generation finds wealth and figures out that going out, travelling, spending money, having a house to invite people over to leads to that cool thing people called sex, and they start doing it.
Who knows