Not to pile on the safety-wagon here, but have you ever watched a teenager drive a car who has never had an accident?
It's easy to tell, because of the casual, over-confidence they have. When I was watched this video, the first thing I thought was, "This guy obviously never lost GPS signal before." When it happens, it happens fast, and your drone can immediately shoot across the room or field. It happened to me once outside, luckily. (I always fly outdoors)
I was only a few feet off the ground - and suddenly my mavic went from 17 Sats to 7 Sats and immediately started flying sideways across the field on its' own. After that experience, I never fly close to people, except myself, and I always keep it above my head until it's launched or caught. Indoors, GPS signal is usually spotty-to-weak at best.
Gruesome picture TJ, but probably a good reminder that we are trusting DJI's technology (scary right?) with 4 flying plastic 10,000 RPM buzz-saws around our friends and families and get so accustomed to it we forget the risks.