What is the rationale for prosecuting someone who has AI produced CSAM that isn't based off a real person? The rationale used so far has been that it creates a

What is the rationale for prosecuting someone who has AI produced CSAM that isn't based off a real person? The rationale used so far has been that it creates a market for production and revictimized the children. If this is not the case, what are we prosecuting people for exactly?