I understand that critical aspect but being faced with an IPhone that is unable to sync mails from the exchange server for several OS versions already is what I'd consider a critical issue and problem. I never had anything like that with the Android or other relevant "not working" issues. I have no idea what people do with their phones to really "break" it.
Edit: I still wonder how people who intentionally switched away from Android take the missing back-button and the continues search for the function within the apps. It's either right or left, called differently every time. Sometimes it's not even there...