I have multiple iPods and it’s a shame I can’t use them with subscription services. It’s too expensive to buy all the music I like because it’s just the perfect use case.
You highlight 2 important use case though that are almost impossible to have without a smartphone (but an alternative can be done on the desktop computer and the map with a paper map). They are just the collateral because it’s not those that cause addiction …
And banking apps.
Music player.