That really is circular logic, and one of the primary reason the Warranty laws were passed Dealers were pressuring Manufacturers to make rules to prevent owner

That really is circular logic, and one of the primary reason the Warranty laws were passed Dealers were pressuring Manufacturers to make rules to prevent owners from allowing 3rd party independent mechanics from serving the cars, dealership (aka stealerships) saw the extreme profit that can be made on servicing thus wanting to have a captive market to ensure high profits with no competition. They used the same augments "well these are complex machine and you just can have any old moron on the street working on them" That argument failed decades ago, and it should remain a failure today. Telsa should not be allowed to lock out independent repair shops under the guise of "well these are complex machines and you need to be Electrical Engineer to understand them"