It’s political, but not in the ordinary sense. Conservative judges tend to share a world view and concept of the judicial role that is very different from what liberal or conservative judges believe. And the gun stock case was not based on the Second Amendment. It was based on whether the regulation in question was compatible with the statute that Congress wrote. In fact, Justice Alito practically begged Congress to pass a law banning bump stocks. My guess is that this will happen after the November election.
Deep State’s Potemkin SCOTUS issued this ruling to try to goose lefty turnout.
For no other reason.