I don't own an EV so I don't understand... when I go to a gas station, I just tap my debit card and fill up. The price and running total is shown on a display on the pump. Why don't EV charging stations work that way?
Sometimes having memberships, RFID cards or apps for the different charging networks unlocks cheaper rates though, so contactless payments don't always end up being the most economical in the long run and that can make it harder to compare charging providers, hence why things like Zap-Map and Electroverse were born.
I have no reason to believe gas stations that wouldn’t require an app if they were invented today.