> I hope some day some how I can buy groceries without my location and purchase details being sold to every data broker in the world.
Nothing about which type of payment system you use can possibly help with this— doesn't matter if it's cash, credit card, crypto, or something else— because regardless of how you choose to pay, the grocery store knows which items you bought and where, and (laws permitting) can sell that data to whomever they want. And the credit card companies already don't have that data: they just see a single dollar amount, not an itemized receipt.
Nothing about which type of payment system you use can possibly help with this— doesn't matter if it's cash, credit card, crypto, or something else— because regardless of how you choose to pay, the grocery store knows which items you bought and where, and (laws permitting) can sell that data to whomever they want. And the credit card companies already don't have that data: they just see a single dollar amount, not an itemized receipt.