The problem with Teslas almost universally is with lemons. Which is to say if you get lucky your experience will be great. The problem is that there are a fuck ton of lemons and cars that have no problems turn into lemons right around the time that the first few problems show up (which means more lemons as they age).
That's essentially just a QA and reliability design failure which is indicative of broader issues with Tesla but it also means that until someone's vehicle starts having problems they will have nothing but a positive experience which can leave them blindsided by said problems.
Some markets could have more lemons that other. An insurance adjuster tell me that most of his interventions with towed Teslas were for cars refusing to start by electric issues and that a lot of the Teslas seen by him were second hand vehicles imported from other countries. The guy disliked the brand a lot. I assume that those weren't the best models if the first owner get rid of them.
That's essentially just a QA and reliability design failure which is indicative of broader issues with Tesla but it also means that until someone's vehicle starts having problems they will have nothing but a positive experience which can leave them blindsided by said problems.