Earlier quoted context omitted.
sure, a landmine is a killbot. a control system with any kind of weapon can kill people but intelligence is much more important than weapons. you can make sure they don't get away or turn the weapons against you if you can outsmart them. also you can kill the people you intend to kill, instead of somebody else, which is fundamental if you have objectives other than racking up a high body count. finally, intelligence…
No, a killbot is a way to kill parties while trying to reduce the number of 'false positives', aka collateral damage. But because a killbot does that the result then is that you get far more deployment and eventually the collateral damage in total rises because the weapon is seen as effective. That's why killbots are bad.
but i think there are other, possibly larger risks that result from strong ai in weapons, and plausible incentives to put it there