Because Apple forbids an app to be disabled or not function, if the customer chooses no, what happens? It’s disabled.
And what if say, a Sasquatch, steals your phone, and your wallet, and he's using the app and delighted by it, by you've never used that app but you're still going to be charged?
What happens if the universe ends?
Apple must account for this scenarios!
What were you hoping to prove here?
Since you can't be guaranteed to be able to bill someone forever, an expired CC being an obvious example, how does an app not break the rule of "Because Apple forbids an app to be disabled or not function".
I mean, the app surely doesn't uninstall itself or give you free access forever.
The rule must be "Apple forbids an app to be disabled or not function without displaying Apple's subscription chrome" which makes sense then.