I guess Gamejolt banned those things because they have an image to maintain, since I downloaded games as a kid from that site it seemed like a 'family' site to some extent. Gamejolt has stuff like creepypastas and FNAF fangames both years ago and now, that's not supposed to be for kids, I suppose, although as a kid that was my daily bread and butter. Not to disparage well-done creepypastas or things like that, but I would think they leave that stuff in Gamejolt because even if it's horror stuff, it's still something that kids are interested in. (Horror suitable for kids? Like Luigi's Mansion? It's not a new concept).
I have no interest in doing mature erotic games, maybe because I'm just starting to be an adult and I have no interest now. Still, I know that a lot of other people want to make those games, and a lot of other people want to play them. Itch.io allows these things, and with the large amount of erotic games I imagine they make a lot of money, I guess, I don't know how Itch.io makes money. That's fine with me, although I would like an option to filter tags so I don't find erotic games mixed with games with sexual elements but not entirely erotic (please tell me if this makes sense). I think it's good that you have found a place used by many to publish your work, at least I would be satisfied with that. I hope you do well with your visual novels of furry lesbians having sex.