I do my own research before I buy a stock. The reason I'm not worried about Tesla quality is the result of that research showed that Tesla had ZERO serious quality problems on their first mass-produced car, the Model 3. We bought 2 Model 3's, one in May '18 and one in Sept. and both have been perfect. Every Tesla owner I meet I ask them about quality/reliability and I still haven't met one that had a single serious issue. This is outrageously good for a first model year, clean sheet design for ANY manufacturer, let alone a small upstart.
I didn't buy a single share of TSLA until after I had purchased their most important product and spoken, in person, with numerous other owners. I ALWAYS ask them if they have had any issues. While the Internet is full of stories of panel gaps, imperfect paint, etc, I have studied hundreds of exteriors at delivery centers. I have a keen eye for slight mismatches, unparallel lines, etc. I can see these things on every car I look at with a critical eye, Toyota's, Honda's, Teslas, they all have them. Tesla is a little noticeably worse (on average) than most other mainstream cars in terms of body panel precision but nothing I've seen has given me pause. You know why? Because it simply doesn't matter! Real car buyers either can't notice it at all or they simply don't care as long as it's slight. The hundreds of Tesla I have studied up close have mostly been nearly perfect.
I don't know, maybe they send the best ones to Washington State?