Please remember that Tay was going back to Ilay knowing that the worst possible outcome of him going back was dying by ilays hands . He knows Ilay is a monster. He went back to him not to make him human because that’s imposible , he went back to take some of his inhumanity. Is he mad at Ilay ? Yes . He just didn’t want to go back on the decision that was already made
Please remember that Tay was going back to Ilay knowing that the worst possible outcome of him going back was dying by ilays hands . He knows Ilay is a monster. He went back to him not to make him human because that’s imposible , he went back to take some of his inhumanity. Is he mad at Ilay ? Yes . He just didn’t want to go back on the decision that was already made