Elon Musk said they'd support 3rd party cars by late 2022. 2023 is after 2022. We're already in this future state of "why wouldn't they support third party cars?"

So yeah, why wouldn't they? Why don't they today? It's the same question and it's the same answer.

In order to receive federal funding new chargers would have to be open to non-Tesla vehicles.

Ok, so why don't they do that today in preparation to receive those federal funds? Why wait until the end of 2023 or 2024?

Why would they not allow 3rd-party cars to charge, today, months after their original date they set to allow 3rd party cars to charge?

There's lots of state level grants available to apply for today, so we're already in the "billions available for public EV charging" future state.

It takes time. They are already very busy rolling out new chargers all the time. This is layering even more work on top of that.

Its been almost a year since first announced, you'd think they'd have at least one charger with CCS by now given how fast and bleeding edge Tesla's technology allegedly is.