One of the biggest problems with iTunes Match on iOS is that the Music app performs and navigates horribly with a large collection.— Marco Arment (@marcoarment) July 29, 2013
Music.app on iPad is a mess. Navigating playlists freezes the app. Plus this stuff happens all the time.
They’ve gotten better with the play count issue, but instead of it not increasing the count at all a single play increases the count by two.
I sometimes think the iTunes Match 25,000 song limit has more to do with software engineering problems than licensing agreements.