I get the metaphor they're going for with reverse-centaur but I can't help believe that there isn't the name a animal headed, human bodied mythological creature that could be used instead.
"Reverse centaur" is I think better fit for purpose than eg. Minotaur, as the head of a bull doesn't match.
"Reverse centaur" does not say what the head is made of.
Maybe Iron Maiden (https://en.wikipedia.org/wiki/Iron_maiden) could work, but the band very much occupies that meme-space...
