my "where did the puriteens come from" take is: how much is this actually an issue?
it may be a bubble effect, but it seems like every time I've seen puriteen/"anti"/sex-scenes discourse on i.e. Twitter, the purity enforcers are in a drastic minority. there'll be an OP who is is being adversarially QTed up to main character status, maybe two or three people defending them--and literally twenty times as many people calling them assholes and posting that meme where the man and woman consent but Jesus doesn't.
some of the kids taking the anti-sex stances are extremely... vociferous... about it, and there might be somewhat more of them than there were a few years ago, but it still looks to me like a small loud movement, not a big generational shift
EDIT: I might have worded this poorly. I think what I mean isn't "so it isn't a big deal", but "so it isn't something that needs explaining in terms of young people's overall relationship to sexuality."
i think maybe the concern is less the actual size of the group but rather the actions they feel empowered to take in the name of “righteousness”.
there have been more than a few cases (though i will admit my inability to remember names brutally limits the ones i have a hope of finding) where employers were contacted or the person was doxxed or even that case where they doxxed and outed a queer person to their family in a notoriously anti-queer country. in each of those situations the vast majority was defending the person being attacked but that didn’t seem to outweigh the damage done by that small minority.
i don’t think there’s probably been a noticeable increase in people with these opinions, it’s just they find each other easier, are more organized, and are willing to go to lengths that are way over the line of what we saw in the past.

