Of course, because people are too stupid to read the docs and properly set up their AP's.
But if the MAC and the IPv6 is registered (and no strawman purchases allowed), then you have a small group of people to target.
Of course, the router/WiFi makers will have to start turning on basic encryption and disabling ESSID broadcast by default. And will also require the user, unlike now, to set up their AP properly, and of course with mandatory on-line registration with the proper fedgov authorities.
Give an inch...
Oh and the next thing to be outlawed; PGP or personal encryption programs. Or if allowed, then keys will have to be registered, with the fedgov having a copy, or a third key, for decrypting your communications.
... take a mile...