Spotify could have made a watch app that provided controls and had offline somgs. They didn’t, and kept shutting down spps that did, or buying them and shutting them. This was a major sore point against spotify on the apple watch subreddit. Even now they’re dragging their feet, iirc.
I’m guessing apple will add lte support for 3rd party apps in watchos 6. Meanwhile, 3rd party apps have had the ability to make apps with offline support since June 2018. Most audio apps have added this.
Spotify....has not. What’s the holdup? Apple watch users are pretty frustrated with spotify: if all the other audio apps can do it, why haven’t they?
(Lte is an edge case: few watches have lte, and even fewer have an active lte plan. Offline audio is the main use case spotify still isn’t doing)