Artificially generated CP (which is going to become common, you can't stop it) will sadly make it harder for CP enforcement groups to identify real victims of crime. CP rings will distribute gigs of the fake stuff mixed in with some real pictures. If the law doesn't make ALL photorealistic depictions illegal, that won't be enough to take the groups down unless you can prove which are real. (though some criminals will be stupid enough to brag about having the real shit because they get off on that)