I wonder if any harm would’ve been done if the parents had never told him that he was the baby on the cover.
I don’t think naked babies are problematic, perverts will perve - but so will the dinner-lady fetishists fapping to hairnet catalogues or dog fanciers over pictures of pups.
This case touches on a number of issues more pertinent than whether a photo of a naked baby is sexual. There are issues around people paid “day rates” for things that later blow up in popularity without any further payment being obliged.
There are huge issues around how social media sharing means that may, if not most western parents are effectively publishing photos of their too-young-to-consent children, where in the past those images would be passed around in family photo albums.
And there are issues around the cultural promotion of embracing your chance of fifteen minutes of fame because it might lead to bigger things. Underscoring what I’ve read about this young man, seems to be a feeling that he thought all the re-shoots etc would lead to something more or better or at least a sustained level of status for him, when really, being the Nevermind baby is hardly anything, and I’m certain he’d be happier now if nobody had ever made a big deal out of it, or like I say - if he had never known.