I was wearing a mask early on in the SF Bay Area. Back when the health authorities were saying that there's nothing to worry about and that masks don't help anyway. I remember so many people giving me the stink eye for no reason. I guess my behavior was the "anti-science", tinfoil-hat stance back then.
Then it all flipped on its head pretty much overnight. And when later, having been vaccinated and having had COVID, I stopped wearing a mask out in the open, I remember the same people getting angry at that. But if you traveled 50 miles outside the SF Bay Area, the reactions were exactly the opposite.
It just bugs me so much that we find ways to turn every single thing into a culture war. We go out of our way to find reasons to lash out against others. I'm not sure if social media is the source of it, but it sure provides a positive feedback loop.