This was explained a flag for Homo sapiens, so yeah, a bit hidden. From @kueda:
We have made it so only staff can edit the photos for certain taxa, and have applied this to Homo sapiens and taxa with Linnean ranks (KPCOFGS ranks, so not things like subfamily) that contain it in an effort to a) stop people from constantly changing the photo of Homo sapiens, and b) avoid offending people in cases where iNat’s automated suggestions may suggest a taxon that contains Homo sapiens when attempting to identify an image of a human.
The photos we’ve chosen are composites of public domain (or similarly unrestricted) images. You can find links to originals by viewing the details page for individual photos.
This was previously discussed on the Forum a while ago: https://forum.inaturalist.org/t/the-default-taxon-photo-for-homo-sapiens/5668 I’ll update that discussion as well.
No specific plans right now, but if an edit war breaks out we will consider locking its taxon photos.