Because the For You and New tabs are not about your library, they are about the streaming service, of having access to the whole Apple Music catalogue. You interact with the features of the streaming service (ie, browsing and searching for music to stream or add to your library) in the streaming section of iTunes. And you interact with your library in the library section of iTunes. You find the features related to the streaming service under the three-dot menu and you find all library related features under the right-click menu. I really don't understand what is so difficult about this.
This is my last post about this. First, if Apple would indeed separate the library from the streaming catalogue, which, and I stress this, they do not, then yes, I could accept that they use different workflows. But they do not. My Music contains your own songs, your purchased songs
and the Apple Music songs you added to your library. While you are viewing your My Music section, you have access to Apple Music right from there. I explicitly showed this with my example above: just click on an artist and you have access to Apple Music from there (where else are you going to view your favourite artists or albums anyway? Are you going to search for them all the time?). Let’s say you are viewing an album in My Music, even there Apple Music is integrated. You can click on “Show Complete Album” and iTunes will show you available songs in Apple Music.
Secondly, if I would accept your point, that the dotted menu is just for the streaming service part, how come you can “love” tracks from the context menu (Apple Music feature), how come you can add a new radio station from there (also Apple Music), how come you can remove a cached download from there (also Apple Music). Also in reverse: how come you can add Apple Music songs (which are not necessarily stored on your device) to your
local playlists? (Also, Apple is using two types of playlists now, pre-made Apple Music playlists and your own local playlists, yet another confusing aspect of Apple Music.) The dotted menu is adding additional complexity to what the context menu is doing elsewhere on OS X and they screw this up in particular in My Music, but they also don’t use it well while you browse For You or New (like I explained above).
Thirdly, I argue that there is no reason to use this additional dotted menu. Even if it is just for Apple Music features, why not use the familiar context menu? The name gives it away: it is a context-specific menu. They could just use that menu in the For You tab as well, but they don’t. The reality is that they use both, don’t separate them clearly (like you think they do) and in many parts insist on it.
As I said, I don't see any reason to add music to my library while browsing my library. That doesn't make sense.
Doesn’t matter, it’s there and you can use it. I have lots of artists in my library and I am interested in adding more songs to my previous artists. Regardless, if you are using the search, For You or New sections, the dotted menu is not consistent there either.
The Spotify UI doesn't have to deal with 'owned' music, it only deals with 'rented' music. That removes quite a lot features it doesn't have to offer. It also doesn't have to offer with features that iTunes had before Apple Music, removing of which would get a lot of iTunes users up in arms.
As a matter of fact, Spotify does allow you to see your iTunes music as well. The difference is that it will put the streaming on top of it, so you never actually notice it. But crucially, the streaming service itself is a lot easier to use. Apple Music has no equivalent of an artist or favourites view at all, because it ties Apple Music to your music library. When you are in For You, you only get suggestions for songs you can listen to or add to My Music, when you are in New, you get top lists and other playlists which you listen to or add to My Music, when you search, you get Apple Music search results (you get the gist). Everything you want to ‘keep’ you will find in My Music and it’s there where iTunes is messy.
Overall, this entire discussion underpins that iTunes has a complexity to it that makes it difficult to explain what is wrong specifically. Apple didn’t bother pissing people off when they revamped iWork and the critics have gone mostly silent about it after major features returned. I would be in favour of revamping iTunes, even if it means sacrificing a few things. As long as the crucial functions remain, I see no reason why it should not. Besides, using iWork as an argument why Apple should not revamp iTunes is not convincing, they screwed up iWork in that they actually removed features and broke compatibility, not just reorganised the interface (like they should do for iTunes). The biggest problems iTunes has right now are the failed attempt at merging My Music with Apple Music seamlessly, the conflicting and confusing use of context menus, the lack of a quick Spotlight-like search like
anywhere else on the system and a simple workflow for getting to your music and adding things to your library.
That’s all I have to say about this.
Edit:
this review is touching upon the very issues I mentioned in my posts.