Not saying registration makes any sense. What makes no sense is AMA's waffling response or lack thereof and possible (probable) future reactions. I don't want to get to the NATS with my Radio throttle, and have AMA say I have to be registered. So I registered to avoid that scenario. If they never make that decision, it has cost me nothing. So for me, at least, the EASIEST thing was to register and forget it.
(I now return to ignoring any and all posts regarding drones, FAA and registration)