First off, it will take a while for me to feel ok with NOT wearing a mask in public.

The question was asked at the President's news conference (I THINK it was, anyway) about "how do we know if other people not wearing masks have actually been vaccinated?" The answer, to paraphrase, was "it's THEIR problem". If they're vulnerable and want to risk it, they can."
There are some folks who CAN'T be vaccinated, and so could be infected, but they're probably wearing masks.

A big "so what?!" sort of squashes the tendency to mind everyone else's business.