You know I think you miss something , Russia has been using low text stuff to take out both drones and military jets by the simple expedient of dumpling Jet fuel on them. It’s not hard to design some kind of Counter measure to take out the cameras of the drones via oily residue and electronic jamming. Or maybe Russia will make good on it’s threats and take out the GPS satellites which the drones depend.
How do you spray oily gunk on the cameras when you don’t know where they are? Once the drone gets close it can rely on inertial guidance, esp. if the target is sizable.