[FoxtrotGolfXray 5.0]

Perhaps reference to the government's restrictions will help clarify the situation with respect to mask wearing in Vic:

• You must carry a face mask with you when you leave home.
• Wearing a face mask is only mandatory on public transport, while in taxis or ride share vehicles, or when going to large retail venues, including shopping centres, supermarkets and department stores.
• Wearing a face mask is strongly recommended indoors and outdoors when you can’t keep 1.5 metres distance from other people.

So, you do not need to wear a mask in a smaller store, where you can maintain 1.5m distance from other people. I get that it seems strange to have to wear a mask in a shopping centre or supermarket, but not your local butcher, for eg. But, I think this is just a risk based approach. Larger store are likely to have more people pass through them. Therefore, if someone is C-19 infected in that environment, they are likely to spread C-19 to more people than if someone was infected in a smaller shop.

I do appreciate that not wearing of masks will not prevent infection in smaller stores, should someone be CV-19 infected, but the numbers exposed to it are likely to be much less than larger, more attended stores.

Seems like a reasonable approach to me.