I've said it before and I'll say it again: the previous music player UI design was set up so that if you were driving, walking or in the midst of doing things you could advance to the next track or change to another song while driving or on the go.
The current design is designed for someone who is sitting at a school waiting for their parents to pick them up from volleyball practice, lots of fiddly, very tiny UI elements and text.
It needs a lot of involvement and interaction to change a track, go back a track or two, or rewind a track. And god help you if your vision isn't so great. Even on a 6 Plus the elements are far too small.
They used a lot of space to show you the record cover which is fine but having the tune name, record name, etc in a tiny thin band at the bottom with a rewind/fast-forward slider that you need to try and control with your pinky - it's ludicrous since it's right next to the UI at the bottom which is more for Apple Music. Ack!
I downloaded Marvis to try and combat some of these issues and it helps some but it has its own quirks.