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.
Article VI
All debts contracted and engagements entered into, before the adoption of this Constitution, shall be as valid against the United States under this Constitution, as under the Confederation.
This Constitution, and the laws of the United States which shall be made in pursuance thereof; and all treaties made, or which shall be made, under the authority of the United States, shall be the supreme law of the land; and the judges in every state shall be bound thereby, anything in the Constitution or laws of any State to the contrary notwithstanding.
The Constitution is the Supreme Law of the Land. The 2A was ratified by the States as part of the BoR and is ALSO the Law of the Land.
The judge that ruled on this needs to be disbarred and possibly hung for treason.
Derivation of the Balisong knife is from the Philippines Islands. As shown the knife is interior to the handles but a skilled user can 'flip' it open very, very fast!
This logic has been in place in California for quite a while. Just look at California’s list of banned firearms.
https://oag.ca.gov/firearms/de-certified-handguns