The real problem is that the disruption to animal life will eventually affect human lives too, so you don't really have to choose.

But why is that a problem? I do not disagree with you about the crisis (at all!), but the only reason we care is because we're human beings - because we defined this to immoral and also because it endangers human (and other) beings lives. IMO, I find it makes very little logical (and frankly also moral) sense to say as a human being that wildlife conservation is more important than the lives of other human beings.

I know you're not saying quite the same, but this reminds me a bit of an "unpopular opinion" I came across once, which stated that people must die because there are too many people living on earth...

(edit: formatting)