What I fear about the idea of "acceptable porn" as others have mentioned, is that it will be standarized through all the posible funding platforms and become the norm "in the way patreon handles it".
Say, if a dev has content or a "side game" that deviates from say norm, platforms would negate service or ban that dev (similar to how patreon can suspend your account for "offsite" activity, like having a twitter or pixiv with content against their guidelines, as they "dont condone a creator usingtheir platform for activities they dont like. Which is basically controlling all the creator's life and work activity based on them just being in patreon, or risking denying of service).
If steam or itch or other platforms were to follow this path (i hope not) then the pressure on devs would be really big to conform to only make content demeed "acceptable porn"or risk the whole (now censored) ecosystem denying them.
So, if that were to happen, a new alternative would need to be (from a profit view) attractive enough to justify losing the posibility to be on patreon or steam or itch (those game would probably not be there to begin with), or basically every dev would need to work on dual projects (one of profitable acceptable porn, the other "forbidden") with different aliases to hide themselves, or just do it as a hobby, which as it has already been discussed, will diminish the time, quality or resources destined to make good games, and restrict the devs and projects that could "survive" under this conditions.
It appears that a future "bottleneck" of games and devs becomes more and more a reality.
I do hope the mayority eventually turns against this draconian measures. Controlling fiction wont make reality better. Solving problems in reality will.