Passenger side has it as well.
Edit: oh it sounds like you’re wondering what someone outside the car does. They probably do the same thing they’d do for any car with hidden/shaved door handles (not exclusive to Tesla). Bust it open. It’s easy enough that vagrants do it all the time to steal junk.
I believe the Inovelli Blue Series dimmer switch does exactly this. I have it networked through some zigbee usb controller I bought and is entirely managed via Home Assistant. I haven’t tested it non-networked but I don’t think there would be any issue using the functionality directly from the switch.