Sadly, that's not the case 100% of the time.
My sister was at the supermarket a few days ago when a bunch of guys (without masks) walked in and started running up to people with masks and breathing on them, fake-coughing and sneezing on them, right up in their faces.
They mainly picked on the women there (including one girl in scrubs), calling them 'sheep' and 'baaaing' at them.
The manager called the cops and these a-holes ran out before they got there, but that hardly fits the description of uncaring Libertarians.
This whole mask/no-mask thing has turned into some kind of pathetic surrogate for the culture war when it's really just a matter of choice.
I would bitch slap the hell out of you if you did that to me even if we weren't in a pandemic. The "idea" behind a mask is not to give it to others more than not to contract it. Doing this to a nurse that is around sick people all the time seems like a great way to get it.