Back on the old CoC forums I belive that Fen once said monkey morphs rub him the wrong way because there is little grey area between them being monkey enough that it's basically straight up bestiality or them being so human that they barely count as a morph.
Monkeys are residing in an uncanny valley, and many TiTS "races" are somewhere there too as for me. And bestiality... As I said, there are nothing wrong with sentient with feral body type. Erm... Not sure is bestiality theme is in "no discussion" list here.
Sapience and consent vs form, let's just leave it at that.
Is term "consent" applicable without sapience? Hot theme, though, consent and animals...