If we're bashing Apple's engineering quality, have no further look than the Apple Music App on Android.

Some examples:

* App crashed for no apparent reason multiple times

* Bug where on multiple occasions music won't be added to my playlists

* Bug where music not downloading after pressing the cloud icon. I always have to press it twice before the download begins, which seems like an obvious bug

Like, these are features that should be nailed down. I developed an android app which did file downloads. Press the button and download begins or is queued. Will tell users that the download fails, which is better than nothing.