The basic question of morality is not, "Are we two similar?", it's "Can we two coexist in a community, and to what extent?" People are going to, quite sensibly

The basic question of morality is not, "Are we two similar?", it's "Can we two coexist in a community, and to what extent?" People are going to, quite sensibly, reject attempts at "ethical" argumentation in which we are instructed to dismantle human life for the sake of nonhuman life. If it comes to two groups in zero-sum conflict, morality has already broken down and you've gone into the domain of war. So there's not much point to saying we should treat animals humanely by driving humans extinct.