The alternative is worse. It doesn't really matter if it is the same as ICE. Every time I use my credit card at my local gas station it asks me if I'd like add my phone number to receive text ads. Every time. Telsa is not going to let that happen. People are paying for a premium for electric cars still and that premium should come with something better than the alternative. Telsa has delivered on that. The concern is that traditional car companies aren't. Telsa made the decision early to own the process from beginning to end. Just as Steve wanted with Apple when he came back. They do not want to be dependent on a third party for their customer's experience with their products and their dedication has shown through the lifetime ownership of their vehicles.
Not only that, thieves are very crafty nowadays with skimmers even with card that have EMV chips.
I remember being paranoid everytime I would gas up and check the pump because I have been skimmed once. All of that is eliminated on Superchargers.
Another benefit I forgot to mention:
"The company also doesn’t take advantage of the extra travels during states of emergency and it generally offers free Supercharging in the affected areas."