1. No, I don't want my iPod to use Apple Music by default. I'm carrying a device with 20GB of music on it, I don't need you to search for a wifi signal on this train and then try to connect with my non-existent Apple Music account. And there's no way to shift this default setting to use the iPod internally-stored music.
2. Two days ago, I took a deep breath and tried to sync iTunes with my iPod for the first time in 6 months. All I wanted to do was move my one newly-purchased album that iTunes had (the new Radiohead, if you want to know) onto my iPod. I still don't know what happened but it ended up deleting all my music, which then required a full sync to move those 20GB back onto my iPod (which, as a reminder, is a device designed to play music.)