I know roughly ~1000 people. Maybe 10 of them have the physical capability of killing someone, in case you don't know, it's not actually that easy to do it yourself.
Of those not all could mentally do it under anything but the most extreme of circumstances. 2, maybe 3 might be actually capable of ending a life under extreme circumstances.
With a gun probably, at a guess, ~400 - 700 could kill someone if they got anxious/scared enough is my bet. Even if I'm way off it's a lot more than without a gun. Couple of hundred at least. Not 2, or 3!
So yes, I'm sorry, guns definitely, 100% kill people.
And more people will absolutely kill someone if they possess a gun, than if the didn't. And by extension same is true if AI.
I'm interested how you even come up with that response? It's obviously factually and logically wrong. What makes you think it makes a reasonable argument to anyone?
Also, worth pointing out, thar AI in this case is insanely unfit for it's purpose (unlike a gun) and will have randomly killed lots of innocent people, even if the AI algorithm says otherwise.
Do you primarily work with invalids or children? Heck, even children can kill, but it usually requires working together. I was reading the other day about a group of under 10yos that buried alive another kid in a village because he looked weird.
Of everyone person I've ever met between the ages of 16 and 60, I'd say 99% are physically capable of killing somebody - you only need to push someone at the right time to have them fall to their death. Frail old woman have killed babies by covering their faces. There are poisonings.
Do guns make it easier or more accessible? Absolutely. Can a 95 lbs woman physically take on a 250 lbs man? Not likely in a 1:1 fight, but I met one who killed her husband with a knife.
That, and that it is non-trivial without a gun, or more powerful weapon, to kill someone.
Which is why, in a lot of places it's extremely difficult to own or have a gun. And sane people consider very carefully a guns use. Most refuse to own or even consider even holding one never mind using one.
The AI discussed here is similar to me. It shouldn't be available or in use, ever. It even strips away the benefit a gun has of the user contemplating the end result.
On your point I'm not sure where you get the assertion any human could kill any other in pre-technological society. That appears evidently false to me. How did you come to that assertion?
I give you a gun and say "shoot whoever you choose with this gun, the choice is yours".
I give you an AI powered gun and say "use this however you choose, I have programmed it to automatically shoot in certain circumstances".
In the latter case, I have some responsibility, because I shared in the decision making by programming the gun. Through my code I have put my proverbial finger on the trigger, right next to your finger.