I was exploring ai porn, for science, and noticed another perverse incentive. I tried to prompt for a naked man and woman standing next to a pool, but could not get it to generate that image. Instead it insisted that the two characters must be having enthusiastic penetrative sex. A dozen prompts could not escape that strange attractor of porn.

It turns out to be built into the training data. The diffusion model just doesn't have many references of naked people not embedded in porn tropes, so it autocompletes porn.

Online moderation of generated images have the same weird incentive. Since real people seldom film themselves having sex, a naked person not having sex is a red flag for a possible real person, and gets moderated more strongly.

So in the new world, well written sentences are a handicap and nudity is generally accompanied by an exchange of fluids.