This is a particular criticism of Jeff Koons. Or maybe it's a criticism of a lot of artists, but it's more significant with Koons because Koons is such a polarizing figure among art critics, or more cynically because Koons' art doesn't (according to the artist!) have any other significance.

Still, it actually hadn't come up in the FB discussion in question, and so I'll go ahead and add Koons to the list of commercially hyper-successful artists in the top post.