For some people the goalposts are moving faster than the speed of light. The goal was to flatten the curve. Remember that? Flatten. The. Curve. Is the curve not flat? How much flatter do you want it to be before returning to normal life? Do you want literally 0.000% risk?
There is a worryingly large constituency, mostly on Twitter, who believe that any unjust death at all is damning evidence that all of our institutions and economic systems must be destroyed and rebuilt. Of course unjust death is tragic, but it's not an excuse to throw out all of society and start over again. I think many of these people saw mask mandates as that "rebuilding society" step, and to get rid of it so quickly (despite it being like a year) is evidence that the state "learned nothing", so to say. I even saw someone say something like "I can't believe the anti-maskers won" which so succinctly ties up the stupid reality of our political atmosphere: you can't do anything, anything at all without it being seen as a goal attempt into the other side's net.
I really do believe that a large amount of people do want 0.000% risk, and they'd be happy to wear masks until 2030 to guarantee it.
As for myself, I'm fully vaccinated but will continue to wear masks to make other people feel comfortable. But even before being vaccinated I didn't care too much if people wore masks around me and I certainly won't care now.