Not excusing these clowns, but...
The mask mandate is bringing out the Litte Hitler, er Karen, in all the nosy busybodies. People get anger when told by some asshat to put you effing mask on, some more than others. This was one of those rather more extreme “more than others” cases
I tended to bitch out in a loud voice about Communist China, leave whatever I was buying, and leave the premises.
The other side to that coin is the business owner that will get fined or worse if a Karen reports them for not enforcing the mask rule.