I previously asked this question about what I might lose if I were to switch from iTunes Match to Apple Music. The basic consensus was that for my needs, I really wouldn't lose anything. I also found this question/answer which says as I understand it, that any songs I import to my library should be available on "all devices". Unfortunately now that I've lived with Apple Music for a while, I've come to a rather unpleasant conclusion. I believe I have now completely lost the ability to add new items to my iTunes library and play them from my phone.
My library is maintained on my home desktop computer, and also now partially on the cloud via Apple Music. I don't store songs locally on my phone due to limited storage space. Previously with iTunes Match, I was able to play anything in my home library from my iPhone 4s which is running iOS 8.1.2 (and I'm not willing to upgrade to iOS9 and suffer possible performance hits as well as application compatibility issues, nor am I willing to upgrade to a newer phone because they are too stupidly big). Now however, it looks like anything that was added to my library prior to my Apple Music subscription, is still playable remotely. But anything I add to my library now, is not.
So am I right that since I now subscribe to Apple Music and not iTunes Match (and paying a whole lot more now, I might add), that my iOS8 phone can no longer stream any newly-added songs even though I've made them "available for download"? They do appear on my phone but are greyed out and cannot be played.