While I think it's mostly a symbolic gesture, it's clear from the fact that Elon has set up an office for himself (with a cot for sleeping) at the end of the Tesla production line that he agrees there is a lot of room for improvement in the quality of their cars.
It's easy to make 100 cars well. It's much harder to make 10,000 cars well.
The cars work, and work well. The important systems are handled properly, if they weren't I'd be complaining about them. Quality control is a hard thing to get right at scale, I think the company deserves a little respect for handling the critical systems well.
It's "crappy" for a higher end luxury vehicle, not for a car in general. A $70-90k car should be fully refined and quite polished.
http://www.theverge.com/2016/5/5/11597508/tesla-model-s-70-b...
I think the interior is shit because it's hard to do at scale and Tesla hasn't been doing it for very long.
When companies like Toyota, which have been in the car manufacturing game for 80 years, still suffer from recalls ( 11 recalls in 2016 alone! http://toyotanews.pressroom.toyota.com/section_display.cfm?s... ), why do we have a stratospheric bar for Tesla?
When you are talking about 100k luxury sedans isn't that exactly what you are paying for? I expect those things out of my car that costs ~40k.
I think the S's quality issues are exaggerated. It's not the most reliable car in the world, but it's probably around average. It just gets a lot more attention, partly because people love to talk about Tesla, and partly because people think (and Tesla certainly encourages thinking) that EVs are inherently more reliable.
From everything I've heard, your final comment is exactly backwards. The early Model Xs, when they were building them by the dozen or hundred, were plagued with problems. These days, now that they're building them by the thousands each month, they're much better. The early Ss likewise had a lot of problems, which smoothed out as volume ramped up.
[1]:http://www.consumerreports.org/tesla/tesla-model-x-quality-i...