Look at the record of drones in Afghanistan and Pakistan.
You mean the ones that performed more strategically and killed fewer collateral targets than any wars before them ... EVER?
Operators actually call the victims "bug splat"
Yea, its called disconnecting, and they are trained to do so. Its the only way a morale and just person can spend their days killing people. You don't want the guys who can do it all day long and call it what it is doing it, those people are dangerous and enjoy murder so they will do things that shouldn't be done.
On the other hand, most of the people doing these things are geeks just like you and me, well ... not like you, these guys have spines
Anyway, they are taught to behave that way so they can actually sleep at night, but hey, don't let your total lack of understanding of all things military stand in your way of judging people because you saw some highly edited video generated by a man with an agenda the size of greater Asia.