As with any policy, it's reasonable to ask just what the enforcement mechanism is. I don't think cops (especially our glorious boys in blue who don't personally seem interested in any kind of responsible behavior such as mask wearing) should be arresting people for not wearing masks. Even if there is precisely zero enforcement of any kind, simply having a rule means that many people will follow it. Most people are rule followers! Signal people should wear masks, and a lot of people will wear masks! Though conservatives arguing one minute that black people deserve to be murdered for not obeying even the mental commands of cops, and then screaming TYRANNY over the unlikely possibility a cop might tell them to wear a mask is, well, you know what it is.
These people who aren't wearing masks specifically to OWN THE LIBS, the plague spreading version of rolling coal, are deeply fucked up individuals. Like most efforts to OWN THE LIBS it doesn't make us mad the way they think it does, because we actually aren't the triggered-by-stupid-shit snowflakes they imagine we are. It makes us a bit worried that people are going to die and the whole damn country is going to collapse into the hellmouth.