Can't do any damage? if one of those hit you in the eyes, you are in for some serious damage mate.
Some drones, normally fly higher in the air for aerial shots, but if this is more used for selfies, then it will fly just above eye level and can easily hurt an oblivious bystander who is taller than the user. tbh this isnt even a stretch of the imagination.
IOT Price at posting:
9.3¢ Sentiment: Hold Disclosure: Not Held