I think this proposal is ridiculous. There is no need to register individual drones. If you want to require drone pilot licenses to fly a drone where potential pilots need to learn the rules that seems much more reasonable to me but having to register each individual drone seems like overkill.
Agreed. Registration of drones over 30lbs, or a wingspan of 6 feet carrying heavy RED cinema cameras, or similar criteria based on safety standards could make sense. But the millions of small lightweight quads and RC airplanes don't make sense to register (not to mention the tiny micro FPV drones you can hold in your hand).