My understanding of the way theyre using it is that it is not directly in charge of munitions.

Which is to say, the AI does not fire the missle, a human fires the missle. That human is (theoretically) able to dodge accountability because they just pretend to believe what the AI says is completely accurate.

Imagine a sniper rifle with a thermal scope. The scope is detachable, it can be used without the gun, but not as a weapon. The gun can be used without the scope, as a weapon, and has other methods of target acquisition available (iron sights if nothing else).

When you look through the thermal scope you see a heat signiature, but it obfuscates if the target is an enemy or a civilian. So using the heat scope allows you to pretend that you thought the civilians you murdered were actually enemy combatants.

A mine doesn’t need a human to detonate it, and the powers that be are not (yet) psychotic enough to give control of the weapons systems to the AI.