I may have foolishly accepted the premise of incompetence in posing my question. Basically it seemed to me like the complaint was untrained/experienced (incompetent) people were deciding/deploying the fancy laser munition. That seemed worth of rebuke. After some brief searching I'm less clear about who took what action.

It seemed more like giving police forces (or allowing them to buy) APCs, armored Humvees, etc. Less trained/experienced people using things made for a different use case, ultimately exposes the people to more risk. Instead of say coordinating with the DOD to deploy the system and personnel accepting requests or being the decision maker for "take action" after some level of expertise in the area of evaluating targets and whatever else need be considered has also contributed to the process.

I don't know how it does work, let alone have enough context to imagine how it should. While I do agree "things to deter drones are appropriate border defense tools," the rest of the details painted a picture that seemed less reasonable.

Nuclear weapons are also directly relevant to "homeland security" (at least as a deterrent), yet I doubt many would be in favor of putting them under DHS as well.