Earlier quoted context omitted.
Who gets hurt if I wear a mask?
Nobody, directly. Who gets hurt if social structure is affected by the apparent identity of masking? There are plenty of instances of catastrophic social division due to physical differences. I think your choice should be your own, and based on health and other reasons. But it's pretty myopic to ignore the history of superficial social striations.
Sure but the fault lies with society, not the individual with the differences (chosen, like masks, or not, like a physical characteristic).