ググったらもろに説明してるのがあった。自分が間違えてました
ttps://www.pix4d.com/blog/etymology-drone-photogrammetry
“Drones are bigger and heavier than worker bees, and they leave the hive and swarm in the fall. They are renowned for a sort of mindless, driven existence: they don't gather honey, they don't defend or maintain the hive,
and their only purpose is to impregnate a queen bee.

“Using drone for the RPVs [Radio Piloted Vehicles] emphasized the fact that they had no mind of their own. And no doubt the buzzing flight of an RPV also reminded them of another flying buzzer.”