People gotta eat and while I disagree with their food choices it’s theirs to make and it is the currently within the prerogative of a business owner to get more customers.
I don’t think the cards ought to be used anywhere but a grocery store but how would it be enforced....
The cost for implementing a technological cattle chute would be astronomical and there would, of course, be exemptions.
It would be simple to have the bar code specific for rice, beans, eggs, flour, salt and milk. We are so doomed as a socialist country.