This is gruesome for sure. That said, most ways of killing people in war aren't good ways to go. Killing is going to cause suffering.
Ideally we wouldn't kill. And then if we do it hopefully it's quick and doesn't prolong suffering. And then if we're pushed to the point that it's us or them hopefully it's them.
I was thinking for now you need a ptz gun with a separate human controller from the human flight controller.