I admittedly know nothing about drones, but a quick search says even the little commercially available DJIs have a max altitude of 20k feet. It seems like they could easily operate out of shotgun range for most applications that they are used for.That could be true.
However the article mentions smaller ones that are being used...so....maybe it should be many drones...not most drones..?
Andy
I could see a use for shotguns for those little killer drones that have an explosive charge attached to their body and are designed to crash into a target and explode.