I think there is an overly negative dogma around generative AI. It's one thing for someone to use GenAI to create images and then call it "their art", and I completely understand why people would be annoyed by this, especially if the 'artist' is charging for it.
However, the usage of generative AI in game development is clearly different. There are many cases, particularly in the world of NSFW games, where a programmer wants to develop a game and has the technical ability to built it, but does not have the creative skills to produce the art themselves. The developer has two options: bring in a dedicated artist (expensive), or use generative AI (quick and cheap).
Obviously, the best option is to pay for a professional artist, but that is a big cost commitment for small project and could result in the game actually losing money overall. The real work behind the game is the coding, so the developer naturally focuses on that to get the project finished.
As long as the AI-generated art is not terrible, and the game mechanics are good, I think this is a perfectly reasonable strategy, and it should not be immediately dismissed by porn gamers.