I would not be fine with that, no, but then, I'm not fine either with killing other apes and other self-reflecting animals ; my standard vs modern society's acc

I would not be fine with that, no, but then, I'm not fine either with killing other apes and other self-reflecting animals ; my standard vs modern society's accepted standard. However, in that hypothetical case you describe, it might be up for discussion. My point was that by modern standards, killing other humans is not ok, and not up for discussion.