> Yes, if you don't trust the retailer with your privacy, you shouldn't use their store

Easy to say, hard to do. It's pretty hard to live without having to enter a retail establishment. Particularly one that sells you your food.

Agreed; it's hard to execute trade in a society without abiding by the norms of the society regarding information exchange. I could also try walking into the 7-11 with a full face mask on (in my state at least, that's not illegal in general), but the owner and register operator really wouldn't appreciate me being that anti-social.

Privacy is a sliding scale and different people set the slider at different sensitivity levels.

And even if one's sensitivity level is high enough to cause personal problems, they're solvable. People that deeply concerned about their privacy have had proxy shoppers buy things on their behalf.

Security cameras are different from facial recognition systems.

And how do you know when the feed isn’t being fed or sold to a company utilizing facial recognition?