Read what? I can't find any document from Tesla which "explicitly" threatens legal action against charging stations who choose to charge older Teslas.
Please cite your source. I'll cite mine:
www.tesla.com
I think you guys are conflating portable adapters with actual charging stations - they are not the same thing and do not have the same limitations.
When ChargePoint/Flo/whoever comes out to convert their old CCS charging stations, they're not just going to show up with whatever cheap random adapter they found on eBay and duct-tape it on. They're going to take a minute to update the little circuit board inside which manages the communication and they're going to do it with whatever protocols they legally can. So unless you guys have somehow found evidence that Tesla has vowed to block them from doing so, we can be certain that for-profit charging stations are not going to intentionally exclude a huge percentage of the nation's EVs.
A lot of irony to unpack there but I'll note that being irrationally offended by the mere existence of facts and resorting to hateful nationalism is really more of an American thing. Perhaps we have more in common than you think?