The idea they are not human controlled is absurd.
They handle like nothing else. There is literally nothing else to compare them to so they seem almost alien. You could dive bomb a gate yourself after maybe 10 hours of practice in a simulator.
Of course the first time you try you won't even be able to keep the drone in the air but really quickly the controls become second nature.
The irony is the guys at the park were most likely not even great pilots. Look up Mr Steele on youtube if you want to watch someone do really inhuman stuff.