I think the Scorpions did something similar with putting an underage girl on the Virgin Killer album, but that may have been non-photographic (not looking it up).

Decades later, Nirvana is still a topic of discussion because of it (and still earning royalties), while the kid in question whose image is used in perpetuity gets told to pound sand because he missed an arbitrary deadline.

We don't need to exploit children as a form of creative expression. We just don't. Depravity is not cultural enrichment.

If it's really art for the sake of art, art justifying itself, then let it be done for free. I want the monetization of such things banned, because I don't think this is art for the sake of art. I think child modelling is done for the sake of commercial exploitation.