Drones can be a rather severe nuisance and potential safety hazard when mishandled. As an example I was at the beach in San Francisco once, and someone flying an obnoxiously loud FPV drone was repeatedly buzzing everyone's heads, often just feet overhead. It completely ruined the beach for anyone nearby.

Even without such dickish behavior, the sound of a million angry wasps and the possibility of unwanted aerial photography is generally not a welcome addition to most of the places people want to go.