Sadly I HAVE seen 30+ people engage in anti-style rethoric. Maybe not as members of the mob, but I had several friends around my own age (38) whom I no longer talk to because their habit of ranting to me or in front of me on topics like "I'm a victim of X and I can't stand knowing that there are people out there who get off on imagining things like what happened to me, it shouldn't be allowed!" or "ugh, people are always talking about [Character] as a sub or saying he'd be into kinky shit, isn't that GROSS?!" (For bonus points, the latter one knew very well that the "kinky shit" she was referring to is something I personally enjoy both in fic and IRL...)