And I believe the warranty contractually obligates them to fix the problem without breaking unrelated functionality owned by the customer.
I think that whether what you say is true, or what I say is true, can only be determined by the outcome of litigation. I truly hope it never comes to this, and expect it won't, even though it would be interesting to see whose legal theory is correct, yours or mine. I, for one, apply Tesla's updates to my car and am a happy owner of my P85DL, despite my thinking that the restrictions in 7.1 are a bad idea.