I am immune suppressed due to other conditions and have no desire to take any additional chances. Yes, they say masks are only for the sick but if I'm standing in the prescription line next to someone who is coughing and won't keep six feet away from me, I sure want whatever protection I can get. And yes I have to clean/disinfect the mask when I get home, plus it has replacement filters.
Does everyone in China have Covid? If not, why are they ALL wearing masks.
It may be unnecessary but with six opinions about most things out there, I'm just being conservative and careful.