I am a strong believer in the premise that everyone is entitled to an opinion, and also to voice that opinion. And further, just because two people disagree, does not mean that one must be right and one must be wrong. It is entirely possible it just means two people hold differing opinions. Let me explain why I don’t agree with your opinion.
What you posted was just a link to a journalistic article. You may believe everything journalists report in the press. Having read SO many reports (such as battery fires, another crash caused by autopilot, electric cars are dirtier than fossil fuelled car, etc etc) I have become wary of any journalistic article. In my experience, more times than not, they are inaccurate, although to give credit where it is due, I would classify electrek as much more reliable than the majority. The link you provided was simply a report of what Tesla said. The correct term for that is hearsay, or in journalism, reported speech. It was not a direct quote from Tesla. At best it may have been an indirect quote. And I accept there is a chance it may have been an accurate quote. I am not questioning its veracity, merely that I was not aware of it.
You state 'this was clearly known to the Tesla community'. That is palpably incorrect, unless you regard the Tesla community as a just a small section of owners in the USA. All that proves is electrek wrote an article about it. I doubt you consider the 'Tesla community' to mean only those people that read every electrek article? What about owners that live in Europe, Asia, Africa or wherever they live. At the very least owners that don’t enjoy English as their first language. I would be surprised if they were regular readers of electrek articles. I, as an owner, regard myself as a member of the Tesla community, and I have made it clear that I was not aware of this policy, and that Tesla did not contact me to make me aware. That of itself puts your statement in doubt. I don’t for a minute think that you suspect me of lying, more likely that I am mistaken or forgetful. I don’t believe I am either. Perhaps you are just making a huge generalisation. But I stand by my statement. Tesla did not advise me that using Superchargers (or even just DC charging) would affect my battery adversely. You may not believe it. You may not agree. Frankly it is irrelevant; I am simply voicing my experience.