That’s all simple one way consumption though. I suspect the effect on people is very different when it’s interactive in the way an LLM can be that we’ve never had to recon with before.
That’s where the danger may lie.
Alien 1: "How did the earthlings lose control of their own planet?"
Alien 2: "AI generated porn"
You could commission smut of whatever type you want for quite a while. And many people do so. Even customised smut is not new. It's just going to get a bit cheaper and automated.