If you watch some videos from Ukraine, you will see, that shotguns can hit them with much increased chances. So if possible without endangering civilians around the place where drones are sighted, I say get finally started, take the shotguns out and take out Russian resources. Just for the time of war make private drone flying without special permission and preflight registration illegal, then take down any drone that moves and is not registered to have a flight at the time. This also won't be giving away very critical military knowledge either.
One thing I don't know about shotguns is, how dangerous falling projectiles are. How much velocity they accumulate. That could be a real problem with this approach.
I've seen my fair share of frontline combat videos from Ukraine.
The hard part isn't shooting a drone when it is in shotgun range. It's getting the shooter close enough to the drone to have a chance of taking the shot in the first place.
For example the drones mentioned in the article can fly at 2.5km altitude at 140km/h.
I guess the only solution then is to already have people in places where it counts. I would suspect military bases have more than enough people. But then again the drones can just fly too high, at which point it becomes a cost/benefit tradeoff, or futuristic laser weapons.
One thing I don't know about shotguns is, how dangerous falling projectiles are. How much velocity they accumulate. That could be a real problem with this approach.