Obviously yes, and I also use quite a lot the music player. But here there is not only the "priority" flag but also the "critical" flag.

I (and you I guess) can live with a buggy music player. It would be annoying but the bugs would affect me and certainly only me.

Now, think of contacts and calendar sync. If this doesn't work as expected, that means you can loose contacts. Not only the vCard in itself, but also the possibility to contact someone if you don't know the number by heart.

Same for the calendars, personaly I missed 3 appointments because of the daylight change bug, and I'm far from being alone.

I use this phone as my primary one, and I missed some customers messages because of the lack of voicemail notification.

Here this is not just annoying, this is totally unacceptable because this can be a issue in your social life, including your job. And I mean "by social", not the FB, etc, but you "real" life.