If you were in the desert being shot at, blown up by IEDs, and just generally having a bad time, a Whopper and Coke being available back at base would upset you?
I’d imagine that you would have a hard time isolating cases of rising religious extremism from the rising social/political/economic upheavals that occur at the same time. These things tend to all go hand in hand, and which one is cause vs which one is symptom is not always obvious.
Probably just a good old fashioned presence sensor. If the sensor is triggered, there’s a “box” there, and the robot does a pre-programmed set of actions. The robot would place the box on the conveyor nicely, but if the man’s head and chest stuck out differently than the box does, robot doesn’t care. It goes to the programmed position regardless. By the time it encounters enough resistance to trigger the collision detection, the damage has already been done.