Umm.... a few thoughts on your comments here?
1. Apple's products attract a lot of technically unsavvy people in the first place! That's practically their business model. Sure, they've always had a lot of "power user" and more technical customers too. But how often does an Apple advertisement focus on that? (I'm struggling to recall it almost ever happening - besides maybe those odd ads they ran when the PowerMac G5 tower first came out, with it blowing someone though the side of their house?) If Apple can't make a product easy and pleasurable for the "average person" to pick up and use, they failed.
2. No question the large music library and curation by real humans are big benefits. But all of that kind of goes to waste when the service fails to deliver. I was previously frustrated by such things as the animated "EQ" displayed to indicate a song has started playing. I was on a slow cellular connection at the time, and kept thinking something went wrong because I'd hit play on a track and see the EQ bars start moving, but heard nothing. Kept cancelling out and playing with my audio settings, etc. etc. Then I *finally* realized the EQ animation is a fake. In reality, my streaming track hadn't downloaded enough to start playing yet, so I had to wait 15 seconds or so for it to begin, ignoring the bars making it look like it was playing something. Bad UI design, Apple! Similarly frustrated with such things as trying to tag an entire album on Apple Music for offline listening. Typically, it seems like doing so at the album level does nothing, and I have to individually select the option for each track in the album to get it to actually download them and mark them as such. (Sometimes if I tag a whole album and then just walk away, I find it downloaded it eventually, at SOME point between then and the next day?)
3. Might not be completely an "Apple Music" specific issue, but it brings more complexity and problems with the whole matter of syncing data across multiple devices. My wife, for example, kept losing her custom playlists she created. We finally realized it always happened when she plugged her iPhone in to her Mac with a USB cable, as opposed to just letting everything sync in the cloud. I believe we worked around that problem by re-configuring iTunes on her Mac to only selectively sync, and unchecking the option to try to sync music, once the device was plugged in and the options appeared to change these settings for that iPhone in iTunes. Still, this is the kind of thing that trips a lot of people up -- and not all of them are patient enough to work through the problem until they reach a solution.