Rarely a merchant gets hacked and my bank issues a new replacement credit card.
Now what if I'm out of town and the card I have in my Tesla account gets compromised?
I could be stranded especially since Tesla often ignores phone calls.
At a regular gas station I'd just use another card.
My Tesla account only allows for a single card payment method with no way to have a back up card.
Sure Super chargers have removed most range anxiety but if Tesla rejects your card you are stranded.