The Thomas opinion in the New York gun case replaces the two-part test used by all of the Courts of Appeals with a single standard based on a reactionary reading of American history. As of today, the courts can no longer look at the severity of the problem of gun violence, and the appropriateness of any given regulation to address it; it can only examine conditions as they existed in 1791 to determine if analogous regulations were pervasive at the time. With the current Supreme Court, the answer will always be no.
In reality, if not in theory, the Thomas opinion applies a strict scrutiny test to gun ownership. This means that gun owners are entitled to the same degree of protection from discriminatory regulation as historically disadvantaged ethnic minorities. Does that sound like a reasonable reading of American history to you?
I can see it now; the next reactionary project will be to have the judiciary identify white male Christians as a “suspect class” entitled to strict scrutiny protections. They already identify themselves as some sort of an endangered species, so why not go all the way and make it official?