Or rather, people that were captured by the politicized nature of masking up plus "all their friends are talking about it on social media". Flicking behaviour.
Flocking*
You couldn't do anything about the virus and (perhaps) dare not do anything about the lockdowns. Yelling at people about masks was the easiest way for a lot of people to exert a degree of control that had been lost in their own lives. I pity these fools who take responsibility for everything except their own behavior.
It's like the inverted Jesus syndrome: Trying to take responsibility for the fate of the world, but by cussing and cursing at people.