The simple idea here is that another thick layer of bureaucracy will make the replicas that are currently available more difficult to get.
They won't be checking a registry if you're seen running down the street AEG in hand but this would mean places like novelty stores selling junk springers would come under the umbrella and they'd simply decide it was too much trouble to continue selling them. Ditto for Canadian Tire and their black pellet pistols.
I can not see them suddenly opening the door to imports of what we consider airsoft just because they could now tax and license them.
Airsoft, where nothing is hurt but feelings.