My experience is also that they weren't outliers. Of the ten or so groups I played with from 10 to 22, I never encountered someone suggesting sexual violence in a game - not even jokingly. Maybe that reflects who I played with, maybe that reflects some other peculiarity, maybe people just somehow intuited I wouldn't stand for it for even a heartbeat - but I wasn't something I talked about, because I didn't even think it was a thing anymore. I'd seen it in RPG horror stories which were on the web since the mid-90s, but never in person, and most of the horror stories seemed to be about the '80s or were in little backwards-sounding places in the US. I definitely encountered sexism, but my first DM was an my older female cousin (and she taught me a ton in just two-three days), so the idea that women shouldn't be in RPGs and/or weren't cool was insane to me. At 22 I met my first "lol sexual violence is funny" RPG-player freak, and yeah, that was horrifying, because it made it clear people were still around like that, and in London.