Honestly, let people do what they want to do. As long as they don't try to force compliance onto you.

If you got to feel anything for this guy, feel pity for either the fear that's been instilled into him or his age/health issues.

Really though, this might be a form of protest. Showing the extreme lengths one could take if they were REALLY scared of the virus.

At the beginning of this whole thing, I often would wear a full face balaclava to emphasize how ridiculous wearing a mask to shop is.