False Creek, Vancouver BC First - Mini 3 Pro

OK. This was my first flight with the new Drone Mini 3 Pro over False Creek. The lighting wasn't the greatest, and I almost craped my pants doing so but I looked into it, and it is legal to fly here since it's a sub 250g drone. I realize that some people are against Drones for some reason. Is it the noise? Is it the fact that it has a camera? What is it? This drone is so quiet that I can hardly hear it 20 feet away. Everyone has a camera in their phone same as this drone, so filming around you shouldn't be any more of a concern.
Some guy started throwing rocks at me and my drone as I was landing and shouting "Fly one more time!". Luckily he missed. Why do you think this is? Perhaps just some random attack. Who knows... Anyway.... hopefully, I can fly again without incident. Your thoughts would be appreciated. Thanks