I have never had that kind of bad service, as you claim you had. I am so sorry for you. My experience has been just the opposite. My MS is now 6 years old and it has been in for service a few times. Every time, I got a loaner with the exception of the last few years. More importantly, the service performed was spectacular! I even received a new main system battery when I was past my warranty! The battery came from the factory and was too heavy to fly to the East Coast, so I had a better MS as a loaner for over two weeks. In fact, the service all along, was a major influence on my decision to buy a new M3P, and subsequently a MXP100D. Currently, I have Cybertruck on order, and after holding my stock since I first got my MS in 2014, I recently cashed most of it out to buy my new home. I do not have anything bad to say about Tesla. They have ALWAYS treated me like royalty (and I am not related to Elon, or anyone else who works there- but I just was made to feel like it)!
There are many positive experiences. I was given many referral gifts when that program used to do that. Upon receiving an autographed HPWC, I did not own a home (I had sold it, and was looking for a new one), so it sat unopened for over a year. When I finally installed it, it was bad out of the box. They overnighted me a new one! Of course, we had to document I had installed it correctly with pictures, as well as confirming my ownership (as it was a referral gift and hence, I had no receipt of sale), but I did have emails showing they did gift it to me. After the credentials were checked out, I got the new unit and all is good. That is just one recent experience, of so many. Bottom line, yes I drank the Koolaid. But I am a big believer in the company, the technology, the whole transition away from gasoline and towards sustainability, as well as the man.
I Always go all in, when I believe in something.
There is certainly a risk when you put all your eggs in one basket, but if it works out, the rewards make it worthwhile. Just my two cents...