You'd have to have a model that has never seen children, which is perfectly fine, but I can't see any of those with the resources to train such a model form scratch actually doing so.
Wouldn’t help. You just ask for a short adult with slightly different proportions.
Guys, it's always the victims fault. Grift Economy 101. No way to prevent this says Grift Economists for the 928401st time. Better write another check to big business.