It is more dangerous because by attacking the popularity of a weapon, it guts Scalia's suggestion that popularity or widespread use is one of the criteria to be used to determine if legal restrictions are unconstitutional.
Other circuits have simply ignored Scalia's test. This one tries to bury it as a matter of law.
The only test should be, “Can this be used as a weapon?”
The 2A isn’t about just militia use or popularity. It’s about having the tools necessary to defend your life, your property, and those around you should the need arise. From common criminal’s, invaders, or out of control politicians.
From John Wick’s pencil to to Chester Nimitz’s aircraft carrier.
Shall not be infringed. Period.