EV chargers often still require internet, however, as payment is via app or their own RFID card/dongle. Putting credit card readers directly on the chargers is a relatively recent (and not yet universal) improvement.
Another reason for internet is so that chargers can report their availability status. In-car navigation or charging apps can direct you to locations with available chargers, avoiding ones that are fully occupied or out of service.
Pin+chip just verifies that the card is yours, not that the card can actually pay for anything.
For example, you could use a VISA gift card with $0 balance to pay for things if you had a system that was accepting transactions while offline.
