This is copied directly from Tesla sales agreement.
Tesla and its affiliates sell cars directly to end-consumers, and we may unilaterally cancel any order that we believe has been made with a view toward resale of the Vehicle or that has otherwise been made in bad faith,” reads the clause...
Sure you can call it BS. There were even some early 2014 Model S with V2X technology built in. Here’s an article from 2018 about it. I wish I saved the early presentation of Tesla talking about V2X
https://electrek.co/2018/07/05/tesla-vehicle-to-grid-technology-v2g-elon-musk/
The Sales people at Tesla know just about the same thing you know. I only know having been through the process of buying a Model Y and Model 3. The sales folks do have any more information than what the public already know.