People are eager to see if it fixed the very buggy earlier version. I wonder how bad the first version of iOS 8 will be. Upgrading with Apple is very risky these days. But it has no effect on sales since the strength of the brand no longer is linked to true quality. Apples brilliant marketing creates the illusion of perfection, which is good enough to sell their product. Quite the accomplishment.
I do agree that the "just works" mystique played no small role in getting me hooked on Apple. Objectively speaking, Apple products have their share of bugs, though I tend to be forgiving of them because I know from experience how hard it can be to get everything just right. They do alright by me because they get around to fixing the bugs in a handful of months. For example, since the iOS 7 fix I haven't had my iPhone mysterious reboot itself for no obvious reason.