He doesn't know how to fly. Most drone pilots don't. Many of them go straight to autonomous flight, and the ones that don't rely on the electronic helps from their flight controller. I was talking with an RC buddy yesterday who is also into drones, actually working on starting up a business with it. He said that most of the drone pilots he knows couldn't manually fly their hexcopters through their intended path and do a damage free landing if their lives depended on it. He's watched a few of them have flyaways when the GPS autopilot glitched and they just stood there and watched. All they needed to do was switch over to manual mode and bring it home through the FPV, but they didn't even have the skills to do that. Of course, the flight controllers are so good now that it's really possible to get a vehicle in the air with no flying skills. That's assuming, of course, that everything works like it should.