Absolutely. Alito, dissenting today, made up law from nothing in the Hobby Lobby case, when he gave religious rights to corporations based on the religion of their owners. This overturned hundreds of years of established precedent that a corporation’s identity has nothing to do with that of the owners. This is a far bigger deal than today’s decision which was a narrow one based on the meaning of a statute.
Your point about the Second Amendment is also well taken. The people who improperly claim that it was originally about individual rights to gun ownership are ignorant about 18th century US history. Colonial governors repeatedly interfered with militias in the colonies, as had the British monarchs in Britain itself — in fact the very last time in history that a British monarch vetoed a law passed by parliament was Queen Anne’s veto of the law allowing Scotland to set up a militia in 1708! No less a figure than the late Chief Justice Warren Burger wrote in the 1980s that the Constitution provided no right to own firearms.
But conservatives actually love this kind of judicial activism as long as it suits their own political ends. The trouble it, they get burned when they lose, like today, and get exposed as hypocrites.