Why are y’all so dumb?
this is the wrong question, The real question is:
Why are y’all so mean?
See, the people believing this shit are the ones who, if being able to create a hurricane, would do it in an instant to harm their political opponents, so it makes sense to them others would do it. They would steal an election, they would get rid of elections once elected, they would pretend to be a shooting victim if paid enough money… Once you leave all morals behind and get on the me and my version of America first train, everything is possible and thinkable. It is not about “is this possible” or “can they do it” it is all about “if I could do it I would so they are doing it”.
Living out the fantasy of having sex with children (or other harmful sexual practices and fantasies) wit AI or alike can strengthen the wish to actual do it in RL. It can weaken the strength to abstain. If you constantly have fantasies where for example “the child AI wanted it too” then it can desensitize you and making it harder and harder to push that thought aside when in a tempting situation. Instead of replacing the real thing with a fantasy you are preparing for the real thing. Some pedophiles already interpret children’s behavior as sexual that isn’t at all, but the AI might be told to act in that way and strengthen these beliefs.
This is still something that is and has to be studied more to fully understand it. Of course this is difficult because of the stigma. There might be differences between people who only are attracted to children and ones that are attracted to adults and children and there is just not enough data yet, but even the communities in which pedophiles who do not act on their attraction discuss coping strategies this is heavily discussed and controversial.
If you are interested in the subject a bit more, this is a start: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8419289/