We can clench our tiny fists and stomp our little feet and placate ourselves with meaningless feel-good arguments about semantics and technical definitions till the cows come home, but at the end of the day, this decision was real, and will be enforced by guys with real assault weapons.
We appear to have been granted a few years' reprieve with this last election, but these kind of "progressive" rulings will eventually be coming at us like tsunami, at the national/international level.