Well I think they could say that and the unit would then respond with x possible targets and the human operator would need to give the ultimate go-ahead. Point being that it would be bad if you have a bot with a machine gun and you tell it to kill everyone hostile with a gun in this area and it blasts that 13 yo kid with a fucking stick. They could identify targets, but a human would have to be the one okaying them.
If you lose communications then you're shit out of luck. Though I guess you would have some backup system like if comms fail go back to base or hunker down etc and wait.
Of course it is not. People are just meming, including up voters.