Edit: Here's some food for thought. Tesla was basically forced to admit the display issue because it was so pervasive, and they basically got lucky that their display didn't cause other problems or bigger problems.
Just how lucky was Tesla? We know they're willing to take a gamble. Where else did they cut corners or skimp that we just never found out about? What else might have gone wrong? Automobiles are one of the most dangerous machines on the planet. We've also heard horror stories from former employees about working conditions, too.
People are Tesla fans because they're excited by the image. By electric cars. By the idea. But they're letting their desire to have that image in their head untarnished means they're not going to be willing to accept genuine criticism of genuine failings. Just like Apple, and Linux, and so many other products, it's generated fans who live up to fanaticism.