You mean, “The aliens do not want to be exterminated, so the aliens would prefer that the maxim ‘exterminate X’, when universally quantified over all X, not be universally adhered to.”?
Well… so what? I assume the aliens don’t care about universalisable rules, since they’re in the process of exterminating humanity, and I see no reason to care about such either. What makes this more ‘objective’ than, say, sorting pebbles into correct heaps?
You mean, “The aliens do not want to be exterminated, so the aliens would prefer that the maxim ‘exterminate X’, when universally quantified over all X, not be universally adhered to.”?
Well… so what? I assume the aliens don’t care about universalisable rules, since they’re in the process of exterminating humanity, and I see no reason to care about such either. What makes this more ‘objective’ than, say, sorting pebbles into correct heaps?