It’s because it counts as an aircraft. Getting licenced to use your drone for anything more than “wooo, flyin mah drone” covers a lot of the same stuff a private pilot would know like reading the maps, airport landing procedure, and airspace. They treat it like an actual airplane. And you can’t just start blasting at airplanes because they flew over your house. If it’s doing more than just flying over it has to be addressed legally.

Have them open Google maps if they use it and show them the timeline. That usually freaks people out a bit. Then you can say sites are doing this same tracking with their digital information or something.