Idenitifying a drone thousands of meters up, hundreds of meters away - bullshit!
I've flown my 380 size quadcopter, about 1.2kg with the camera & gimbal attached, straight up 100 meters to get some scenic view footage.
At that distance away it can be near impossible to spot it when you're looking at wide open sky, even though you know where it's supposed to be and can hear it, and see its camera view from the ground.
If it's so difficult to spot a stationary drone from a stationary spot, that's only 100 meters away, how the hell do those pilots, flying at hundreds of miles an hour, can say with absolute certainty that tiny speck in the distance is a drone?
I call bullshit on that.