LOL! Reliving their youth as hall monitors and crossing guards.
I wear the damn thing just because my goal is always to spend as little time in the grocery store as possible. I go to Walmart almost exclusively after they installed the self-checkouts which expedites that process even more. I know what I want and where to find it (until they jumble up the store again) and I have no mobility issues so I can move twice as fast as most and I see it as a tactical exercise in getting in and out as quickly as possible with the desired acquisitions. That does not allow time for arguing with idiots, and I view putting the mask on as part of the gear needed to accomplish my objective ;-)
I find the best time to go is mid-morning right after the Old Fart Hour, because parking spots are usually abundant and I can zoom in and around the malingering seniors with ease.
One of the best things about the new rules is the relative scarcity of rug rats in the stores. They should be perma-banned IMHO. And the arrows on the floors showing the one-way aisles? They’re like public IQ tests. However they don’t accomplish anything because if I comply with them I end up racing down one aisle that I don’t need anything from just to hook a U at the end to get onto the aisle I want while showing that I am capable of knowing which way an arrow is pointing.
We shop at Walmart occasionally and never wear masks. We also thank others for not wearing masks. Usual response is a smile or chuckle.