I agree that itch.io often unfairly targets a lot of the adult creators. There are a lot of creators that don't one hundred percent clarify what their game is and thus cause confusion but then there's other stuff that's fairly vanilla that seems to get hit by the random lottery of 'ban them, ban the non-believer' with no explanation given at all. I just discovered f95 was a pretty open place, but it's also still not the most professional, there's also just a lot of content that gets allowed on steam because they believe more in the idea of total freedom than itch, which is weird given what itch.io's mission statement is. I wish there was a bit more clarity in some ways, and just more conversations like this one.
an nfsw forum would be a great place to talk to other creators, ask for advice, and learn more about the creation process. it would have to be 18+ but if 4thewords can do it, why not itch?