most definitely, the inchoroi are us, in the future, and we bioengineered our physical selves into giant vaginas because pleasure is everything, that's why their heads look like what they look like. and we bioengineered away all our inhibitions so that we are perfectly amoral with no compunctions to prevent us from our pursuit of pleasure.
I don't think the Inchies are literally us, but they are stand-in for future transhumans for sure.
A related question I have, Aurang offers to give Inrau the ultimate experience of his religion, Inrau worships suffering, so Aurang offers him the ultimate experience of suffering. Isn't Aurang nice? He's just giving Inrau what he wants. He just wants Inrau to be happy. Inrau thinks Aurang doesn't understand. Perhaps it's Aurang who understands, and Inrau is the one who does not?
I sometimes think Aurax, who I assume to be the interrogator at the end of TWP, is far creepier than Aurang. Aurang has assimilated enough that he gets why people oppose the Consult. He knows he is doing something wrong on some level.
Aurax, otoh, really does see all living things as playthings. He's amoral through and through. He doesn't revel in transgression the way Aurang does, as he doesn't even get the idea of sin. He's just acting to avoid bad outcomes, like a Dunyain whose mission is ejaculation rather than enlightenment.