It is very true, you think the only way thst music came from your phone before 2016 was iTunes? It was a hack that streaming services - mostly radio streaming services- used before iOS 4 when apps could play music in the background used because Safari was the only thing that could run in the background.
The question was why did Spotify have to use an app instead of using the web.
But then again, are you really saying that Android users don’t use the app?