So because people kill people, machines should be allowed to kill people? not even logical, I can see an argument being valid as in why shouldn't machines kill other machines. why do you think machines should be allowed to kill people?
This argument is fatecious and irrational. You can argue whether it's acceptable to kill. Beyond that it makes rigorously no difference whether you kill someone with your bare hands or by pressing a button.
There may be ethical questions in war, but I don't see why the mechanisms should matter. Perhaps it should but you haven't even come close to making that case.
Maybe my bad for assuming that any reasonable person reading wouldn’t need it stating that killing people is, yes, immoral. And given this shared understanding, the root of my question was why a machine killing people is more immoral.