Radio control aircraft require more talent to fly, and in order to get to that point, the "pilot" will probably have come in contact with people who've told them that it's not legal to fly "just anywhere".
I have not heard of or seen a radio-controlled aircraft (other than the "drone" style of helicopter) that has inertial stabilisation systems on board, and therefore RC aircraft require a steady hand and lots of practice.
Drones are extremely simple to operate, and can in fact be operated with no input whatsoever, just program in the coordinates to fly to/from and away it goes.
That's the issue, to my way of thinking.
It's easy to mount a la*er pointer on the drone, and fly to where it would be in the take-off path, and shine the thing in the windscreen of departing aircraft.
Or just fly it into an engine.