it's authoritarian to take advantage of the Heller decision

We are living in the conservative fever dream of Antonin Scalia, who wrote the majority opinion in DC vs. Heller, which basically said, "we're gonna ignore the whole first clause of the 2nd amendment - everyone gets to have a gun".
If you disagree with the decision, but still purchased a gun, I submit: that's equally authoritarian to, say, suddenly running around saying women have no right to an abortion, just because SCOTUS says so.
And if you've simply "given up", because 400 million guns is such a huge number, what's one more gun? That's the end justifying the means, but in the negative: no ends, justifying no means. We're not gonna try (and no one else will, either).
Isn't it time we live and die by our principles? This is how the unthinkable becomes "normalized". We're on track to have over a billion guns by the time a current preschooler graduates from high school. Generation Target Practice deserves better.