Holy hyperbole, batman! Threaten to overwhelm the internet!
Someone's hungry for clicks today, eh, The Guardian?
AI-generated CSAM is illegal under the Protection of Children Act 1978, which criminalises the taking, distribution and possession of an “indecent photograph or pseudo photograph” of a child.
Aaaand there you go. This is nothing new. There have been laws on the books for decades to help deal with this exact problem. Someone just slapped "AI" on the story to gin up worry.