It’s getting more and more open, which seems weird to me.
There’s always been those anime that border hentai with taboo topics (mainly underage “romance”), but I got the impression that until a few years ago that the situation about them was “yeah, there’s some weird shit. don’t touch that stuff with a 10’ pole”. But then it went from that to “b-baka, I only watch it ironically hides siscon pillow with stains in closet” to “that’s not serious siscon, it’s a funny parody” to “I have no idea if this is serious or parody or whatever”. The lines blurred so much in so little time.
Sounds like that would be social suicide and along the lines of “keep your weird shit to yourself, okay?”.
Meanwhile that’s a common joke on the western side of the internet that’s not a serious statement at all, just to get a laugh.
Unless you’re on 4chan, then you can never know if someone is serious or not about that.
Overall that sounds like having two personalities: one for society and one for yourself. Can’t be too healthy.