again - if worn correctly, mask use may moderately reduce the risk of infection in scenarios where only moderate distancing is possible. but, in the real-world scenario of shopping at a store, where nobody wears them correctly and people are only distancing when they're yelled at, they're all but useless, and if you're in a high risk category then you should just not enter these stores at all.
so long as people are engaging in these types of activities, pretending that you're slowing the spread by shutting down bars is just empty theatre.