The wearing of masks has become the look of this viral outbreak. Its usefulness isn’t immediately apparent, but there does seem to be something.
Wearing of masks is not recommended by health experts for people in the general population. They should only be worn by confirmed cases and health professionals. Having everyone hoarding them would lead to shortages that those two groups of people would desperately need.
However masks can have an interesting psychological effect. They show that the wearer is conscious of the virus and taking active measures against it. It’s an act of mindfulness.
Embarrassing reckless situations like the one that occured at Bondi Beach would be less likely to occur when everyone is walking around with masks on. It’s reflects an understanding of the virus and that you’re prepared to do what’s necessary. It wouldn’t have a medical effect, but incidents like the Bondi Beach gathering would be less likely to happen in the first place.