Erotic game is just a scape goat for this kind of stuff. Parents already blame video games for their child's behavior. It's of course parents job to look after their kids. When I was a child, my dad bought me GTA San Andreas. He had no idea what a rating system is. He just assumed videogames are for kids just like books are for kids because majority of students have to read them.
I don't want anyone to see erotic game in good light but don't want them to initiate a witch hunt either.
About AI content, as someone who is terrible at background illustration, I think using AI for insignificant things such as background is alright as long as it's not too jarring. But whole art? Why pay for that? Just make those content yourself then.
I promise though none of my works has AI involvement in it and never will.