Quoting from the page:
> TLDR: Apple rules mandate a cumbersome Audiobooks purchasing process
This is very much a lie. Apple’s way is the easy way - use IAP. And it seems that like with facebook [1] they’re trying to apply the rules evenly to everybody. Spotify religiously denies using Apple’s In App Payments. The attempt to send emails on how to purchase audiobooks is their sneaky way of bypassing the rules. They now to try to blame the process they came up with themselves on Apple. But Spotify is to blame, for not following rules of App Store which demand IAP for “digital goods and services”.
However you feel about IAP if spotify has the courage it should challenge in court (like Epic) instead of a website that makes a very bad biased take on the situation.
And we know Apple is not going to respond publicly.
[1] Story about Facebook boosts being forced to IAP a few days ago