Oh, so you mean the photos in the training dataset that violate medical privacy, because parents who consented to photos of their child being included in textbooks and medical journals for educational purposes didn't consent to photos of their child being used for AI-generated child porn for the sexual gratification of paedophiles? The only way photos of children from medical literature would be ethical to use for child porn is if the parents of the child have consented to that usage. Having had surgery last year, where photos were taken, I can confirm there are extensive consent forms to be filled out for what medical professionals can record (photos, videos, livestreaming, etc), and what they can use the visual records for (research, education/training, sharing cosmetic outcomes on social media, etc). Parents that will have checked the "can use photos of my child for research and education" will not have given informed consent for those photos to be inserted into an AI model for child porn, and are unlikely to give consent if "child porn AI" is a separate box on the consent form.
So... yeah, you're not convincing me using medical photos of vulnerable children in hospital settings to create fapping material for paedophiles is an ethical use of AI technology.
And an AI without photos of lions is never going to be able to produce a photorealistic lion, even if you gave it a sketch of a lion, because it would have no frame of reference for what a lion is supposed to look like. It would make its best guess, which is fine for when it's something that doesn't really exist - but when humans know what a lion is meant to look like, they'll know when an AI botches it.