That said, flying objects are inherently dangerous. I was at a bike race and a guy was following the pack with a DJI drone. One motor suddenly failed and the thing plummeted to the ground from 40ft and broke into a bunch of pieces. Luckily, it didn't hit anyone but it would have been a major incident if it had.
There's a lot of excitement about the cool, flashy features of these drones (following, waterproof, nice camera) but no assurance that it won't suddenly break and kill someone.
I want 99.9999% reliability and strong safety guarantees as a feature.