It's not that they believe this change will "catch all the shady ones," but rather that it creates a new threshold requirement under which telemarketers must operate. That means that, unlike before, should a telemarketer fail to register, that act itself is a violation of the law, and will at the very least put the telemarketer on the prosecution "radar" of the AG's office, allowing them to shut the telemarketer down without having to prove they made harassing calls. And as for those telemarketers who want to at least create the illusion of respectability and legitimacy, they must now jump through one more hoop to do so, putting their neck through a leash by which the AG may more easily control them, should they get out of hand.
