This is a recent albeit arbitrarily applied trend against adult indie games, spearheaded by payment processors but there's obviously a bigger agenda behind it.
But there's really nothing much an indie adult game dev can do about that. It's censorship aimed at the smaller devs. Live action television has much worse stuff, virtually every story has forced violence and/or SA as important plot points, not to mention going into other even more uncomfortable themes. Ironically when shows do that, they got Oscar nominations. Games from major studios also will have that content consistently. It drives plot forward and creates an investment by the viewer/player.
Yet, now, only the smaller dev is targeted. Realistically, if these new rules were applied fairly and universally, it's Hollywood and AAA studios that would find themselves on the chopping block first "for the children." But that's not how it's going.
So while yes, you have some degree of truth to what you wrote, what is a smaller dev to do exactly? They either make a compelling game with the vision they had in mind, or they neuter everything and then what? They can still arbitrarily get banned anyway (itch.io for instance just removed all adult content, and has been caught before removing games "by accident" even before that). Most devs are just doing it as a hobby and if they don't enjoy what they're doing, of course they won't do it. Need to actually enjoy the process and feel satisfied with their artistic vision.
I mean Lawrence of Arabia even has a gang rape scene and that thing is what like a century old? Older? From way more puritan censors? It's like how did we manage to somehow get more censorship to fictional renders in 2025 in a supposedly free and progressive country and time?