I worked for Spotify, and apple did all kind of hoopla to delay/deny the iOS updates....
My favorite one: If you did tap at one of the support/help tabs, it would open a webpage, which contained the support text, and the app got rejected, because after about THREE links, that would lead to the homepage, and there was a premium offer, and you can't have it.....
They kept denying updates for reasons like that....
"Coincidentally" they released their streaming service that month....
That's extremely anti-competitive..... and it wasn't done for the benefit of the user, but for the benefit of Apple only. When a user buys a phone, they have a reasonable expectations that other apps would work, and you will not be forced to use apple only services (directly or indirectly).
I.e. they are false advertising their phones.....
Apple not permitting apps that display certain types of legal content in the App Store is not a benefit to users that like to produce or consume those types of content. Censorship sucks, even if Apple is legally permitted to do it because it’s their store. It’s rude.
Hopefully the rumor that Apple is soon going to let you select a different default browser/mail/music/photos app is true, and this will be less of an issue.
It will still be an issue because of the many types of apps that Apple simply censors entirely from the store, from Tumblr to Tor to VPNs in China.