Currently, Lily does not have any obstacle avoidance capabilities. We have found that most outdoor activities do not need obstacle avoidance because Lily can follow the user's path. But again, there are no guarantees that Lily will not hit anything while it is following you. If Lily is about to hit an object you can press the middle button on the tracking device and Lily will stop, hold its position, and continue to film you."
It certainly does. That's because they're still rare and we're fantasizing that they'll be used by or for us.
Imaginably, these things will develop in a ways that are noiseless, take little power, and have minimal or no risk of falling (eg onto human heads). But if this happens, it will be after they proliferate. And till it happens, a drone is likely to irritate all who are around, aside from its owner and his chums.
I did the Tour of Matabungkay in the Philippines a few years back. They were using a remote controlled helicopter to video the last kilometer. This had a rotor span of over a meter. I was more afraid of that coming down on me than crashing.