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.
like biological weapons, its collateral damage might be a lot less predictable, because it's hard to predict what someone who's smarter than you will do