Earlier this year I read a BBC book on Auschwitz which pointed out that the gassing executions (first in trucks, then more established) were conceived partly as a way to prevent the psychological trauma of close-contact execution on the German soldiers. Reports of distress (nightmares/breakdowns/suicides etc) from the soldiers tasked to kill the civilian Jews etc led their commanders to look for ways to put ‘distance’ between executioners and their victims. Really. Out of concern for the soldiers’ mental health!
These drones (merely an improvement on the nazi bombs that buzzed over the English channel to ‘blitz’ civilian London) would have found a ready acceptance, methinks. – Peter