That may be true now, but Tesla cannot - repeat, Cannot - retrospectively change their warranty for an existing owner. As I quoted from their warranty agreement above (and reproduce again, in case this helps other members):-
"No person or entity, including, but not limited to, a Tesla employee or authorized representative, can modify or waive any part of this New Vehicle Limited Warranty"
So, if you are an existing owner, and there was no mention of rattles, creaks or other symptoms of shoddy build quality NOT being covered by the warranty, then you should be fine. (Personally, I'll find out on Wednesday next week…)
I understand what you're saying, but if you look at the linked thread (the title is misleading), there is an excerpt from the warranty exclusions list, which states exactly that: They are not covered.
They charge the fee up front, and then waive it if the noise is a result of a failed part that is covered. It's pretty standard. I had the same thing with my BMW when I brought it in for service.