>the changing interface makes me feel like I’m suddenly operating unfamiliar machinery, piloting an ungainly tractor in a construction site. I can’t perform the same actions I used to, and so I can’t use the app in quite the same way.
This sounds like a good thing honestly, It will keep your brain from solidifying and becoming entirely non adaptive as your preexisting knowledge was all that was needed. Constantly learning new things is literally good for you even if the new knowledge isn't more useful than the old was. A child sees the new spotify UI and works it out within minutes, if you can no longer do this, it's an actual issue and you should probably thank spotify for keeping your brain active for a little longer.