No one cares about the plug itself. The thing people care about is access to charging networks.

Tesla recently decided the moat of having their network available only to their own cars isn't worth it anymore. Some of it to get federal money that can only get on stations that serve multiple vehicle brands, and not just their own.

They could've do the costly things, and made their charging stations with multiple plugs, like other networks do. Or they could've used the same plug as other cars, as they do in Europe (because there the regulator was ahead of them, and forced them to actually be compatible with everyone else). Instead, Tesla did the ingenious thing, and got other manufacturers to bear the cost of making their vehicles compatible with Tesla's chargers.

You know that they are selling, or you can confirm that online, so why even ask? What is the actual nature of your complaint?

I don't see this case as fundamentally different from any "next years model is coming soon" sales scenario. Except that, you know, this time there is an adapter to give to the people who bought 6 months ago.

Salesmen have well-worn playbooks to deal with it.

It's in the sales interest to keep the changeover window short. Manufacturing would disagree. Nevertheless, the window appears to be closing soon.

The comment about selling "access to charging networks" is exactly right. And also making use of them the exception via at-home overnight charging.