Ah yes, Payconiq, which only works on a small subset of walled garden devices. As opposed to a cheap card which fits in anyone's wallet. A proton payment was essentially two button presses, card selection + OK. It only added delay because some terminals were slow or weren't very user friendly. Paying with Payconiq in a shop isn't any faster than Proton. Someone (or something) still has to decide which payment method is going to be used. And quite frankly, if two seconds is too much friction for a physical payment, I hope you never find yourself in a shop when the Payconiq system is down.