That's fair, but at least they could say something like "you can download our songs for as long as we allow it" and not "you can download your favourite songs and listen to them any time, anywhere" when that is only partially true, since, if someone has a playlist downloaded (still talking about personal experience) and they go offline for a long period of time, they can no longer play the songs and are required to get an internet connection only for spotify to audit and say "yeah you still have a valid subscription, you can still listen offline". It's not truly offline if I have to connect to the internet every once in a while.
Again, it's completely fair, but they could at least tell more than half-truths