Swift Playground is listed in the App Store... So no, Apple apps listed in the App Store must follow their rules.
I checked quickly in the guide and no mention of "Me, Apple, can do whatever I want in my store."
I checked quickly in the guide and no mention of "Me, Apple, can do whatever I want in my store."
Broken analogy? Apple is the police of Apple store.
I don't know what you wanted to demonstrate but, sorry, you failed :/