That's the OP's point: in a situation where you might want to have the drone registered, the operator is probably breaking some other laws, and would be unlikel

That's the OP's point: in a situation where you might want to have the drone registered, the operator is probably breaking some other laws, and would be unlikely to have their drone registered. That is, the registration is not helpful, and so should not be implemented in the form proposed by the FAA.