I've only ever used Apple Music with local content. On iOS the only indication to me that non-local content is even possible is the radio tab at the bottom of the screen.
On MacOS I think it opens to the online home page, but I use it so infrequently I'm not sure. I pretty much only use it to buy music from iTunes.
On MacOS I think it opens to the online home page, but I use it so infrequently I'm not sure. I pretty much only use it to buy music from iTunes.