I hope I am using this quote feature correctly--
Of course,a registration reg does not explicitly stop someone from blowing off the regs, but I submit that it does implicitly have a curbing effect on a rogue operator's actions--you are less likely to ignore the regs because you know there is some mechanism, albeit imperfect, to map drones to people.
Only if the drones get caught. As implemented the reg doesn't require any identification to be transmitted - even more so, if a rogue operator decides not to tag the drone, then there's no way to tell.
I submit that folks like your friend that flout the rules now will stick up their middle finger at them going forward.
In linear algebra whenever you impose any boundary constraint, no matter how slight, you limit the allowed set of solutions--I guess I think the same things happen mentally to a potential rogue operator.
Except you haven't set up a constraint at all. I buy a drone, I might be told I have to register it. But no one forces me to. If I don't tag the drone, and it gets found (or shot down), then it is no more likely that the operator will get identified than the likelihood now. And there are plenty of folks in this country that would see this as a means for the government to identify everyone who owns a drone for surveillance purposes. If you want to see how this will play out in practice, look at what happened with CB radios in the 70's.
"I require you to stay behind the line. No, I really mean it. No, I won't physically stop you if you don't stay behind the line. But if I catch you I might fine you."
It is, therefore, not a true constraint. It does add a burden.
In the satellite business the FCC is starting to enforce tagging of all satellite transmissions for pretty much exactly the same reason--to prevent rogue operators from interfering with use of a shared medium. At first the US military was all up in arms--they are not going to bow to the FCC and tag their transmissions!
...until they realized that in a "tagged" world, NOT tagging is just as much an identifier as tagging. In fact more so.
That's different because the requirement is to tag with a transmission that can be received by an external observer without entering the transmission facility.
It would be a good analogy if the FAA (or FCC) were to require that the drone transmit an identifying beacon. Or require that the controller transmit such a beacon. Observed, easy enforcement. Or the drone had to have the ID number tagged large enough to be seen at a distance (like N-numbers or auto license plates).
This tagging proposal will only provide for enforcement after the fact - it requires essentially voluntary compliance.