I assume that these devices will mainly being deployed against enemies not having those. Main advantage: no chance of mercy. Extremely valuable in civil wars...
Do note that the robots described in this article only drive autonomously, and when armed, need a human to (remotely) fire the weapons.
If the robot shot autonomously, you'd have a point about mercy. But the way it is described here, it's exactly the same mercy-wise as if the soldier manning the weapons was riding along in the vehicle.
If the robot shot autonomously, you'd have a point about mercy. But the way it is described here, it's exactly the same mercy-wise as if the soldier manning the weapons was riding along in the vehicle.