> Your peddling FUD. Just because you touched something in a way that wasn't specifically authorized by the original manufacturer of that something doesn't make you liable for anything that something does in perpetuity unless there is evidence that it's actually your fault.
I dunno. I think if I walked in with some random "brake rotor" that wasn't like any of the OEM or aftermarket ones they were used to seeing, the mechanic didn't know much about and couldn't verify would work sufficiently, even if it bolted into place, they might tell me to take a hike. I expect they would do a similar thing if I wanted airbags that went off replaced with something that looked like it wouldn't work right. Or a gas tank that looked suspect.
I know I would turn people away if I was a mechanic and they came to me with those requests. Maybe those items worked perfectly fine, but if I don't have assurance I'm making a good call (like, for example, by knowing I'm replacing components with parts that are trusted by the OEM or have a proven rack record), why would I take that risk, legally or morally (if I think the person is making a bad decision)? Some decisions impact safety (especially when dealing with components that have a lot to do with safety), and I think those deserve some consideration.
That doesn't mean Tesla should be the only entity allowed to repair though. Perhaps some of these components are perfectly fine, and you just need to find a mechanic that has enough experience with them to know that (but good luck finding the experienced mechanic instead of the one that doesn't care when looking around I guess, I'm not sure how you tell them apart). Competition is generally good.