Interesting thread and I definitely share a lot of the sentiments here. Wanted to give my 2 cents as well.
I have bought 4 Teslas and still own 3 of them, though I definitely wish I had used the money to buy TSLA during those years... time machine, I know...
My first Tesla was a 2016 S60 when we lived in Southern California, absolutely loved it and the density of Superchargers in California was fantastic. We loved the car and the experience. The car had minor issues but Service was awesome and always addressed the problems. It was unfortunate that we had to sell it in the end when we moved to Toronto as at the time, you couldn't import a used Tesla, other than the original Roadster, to Canada. I tried to work with multiple Tesla teams in California and Canada, but they just wouldn't accommodate. You could say that they don't really care about the rare customer that relocates across the border and wanna bring the car over. Tough luck I guess.
After moving to Toronto, I ended up buying the first batch of Model 3 LR. A completely different experience from a owner's point of view, I'd say. Service is noticeably different, they just never seem to go the extra mile for the customers anymore, kinda like what one of the previous posts mentioned. I understand the customer base is a lot bigger now with the 3 and eventually the Y, so it's really just all about expectations.
I then picked up a CPO 2016 Model X and boy, it was just repairs, repairs, and repairs. Nothing major or serious, but it's just in constant need of minor repairs. The infamous shudder, door latch issues... you name it. I still own it and my kids love the space and FWDs, but the quality issues are just part of the user experience and most of us I'm sure have simply gotten used to it and decided to live with it.
Then we relocated to China. I think this is where my experience would differ the most from many others. Right after we settled, I bought my wife a Model 3 SR made from the Shanghai Giga and the build quality was pretty darn good. The issues I had with my Model 3 in Canada were mostly non-existent. We've owned it for almost two years now and only had 1 visit to Service for a software issue. But what I'm really trying to get at is, the EV market in China is way more competitive than in North America. Tesla has this massive lead in the US/Canada, maybe shrinking with Rivian/Lucid/etc. catching up, but there's really not much competition compared to China, where Tesla is up against NIO, XPeng, BYD, just to name a few. So competition definitely pushes Tesla to up their game, whether it's build quality or service.
Where as in North America, when most Tesla owners that are in the market for another car, what's the alternative if you wanted another EV that's comparable say to the Model X? Almost nothing exists in the marketing right now. Hence we live with the issues that the car has, not because, at least not for me, that we love the company/car so much that we would ignore the problems, but because we don't have much choice.