Oh no! Someone can track my spending!!! I literally don't care. Middle-aged bloke spends too much on beer and electronic gadgets. Shock. I catch the same train to work each day. Scandal!
Well, yes, if you have lived your whole life in a standard democracy, I guess you feel OK with almost impossible invasion of the privacy. If you had however lived under anything else, this would be a concern. Not a big concern, but you would prefer to pay for certain transactions using cash. That might be prescription-only drugs, alcohol or specific niches/services people are into.