While I am on the side of right to repair I don't see how this is that relevant to the issue. It seems like more of an issue with insurance/rental laws, transparency in legal agreements, tesla's pricing & service being a bad deal, and possibly negligence on the renter's behalf. I don't think that any company should be allowed to hold a renter liable unless it's proven they damaged the property on purpose. Usually there are a lot of protections in place for renters so it's possible tesla is breaking the law or the renter accepted some liability attempting to save money.
Rentals and shared ownership situations are always messy anyways... A lot of this just reminds me of: "My condo HOA decided to hire the most expensive roof repair company in town!! Why can't we just pour some cheap tar across the roof and call it good for a few more years?!?!"