I think I can also pretty decisively say that hospital purchasing optimizations give face-fitting masks a bad rap. The FFP2 masks that hospital staff wear here are cheap and very uncomfortable. This bleeds into society as a negative view.
I know my comment will just make you angry, because "you're different". But, maybe someone else will see it and consider their psychological state on this topic.
I wish for your life to be long and healthy; and the lives of your loved ones too. And in that, let me give you advice to trade for your judgement of my place in life and my actions and sacrifices and loss. The advice is this:
Read. The academic. Literature.
So what can you say? You see a stranger wearing a mask, you don't know if it's for a good reason or not. Probably the odds are that it's an emotional or psychological hangup, but it may be for a really good reason. So you need to just shrug and let people do what they think best for themselves. They're the ones responsible for themselves.
In terms of being weird: there are enough people wearing masks and most people literally care more about what they're going to have for dinner than whether or not you're wearing a mask. If a mask helps your family, don't worry about the epsilon weird aspect (as I'm sure you have already calculated).