[darklion]

> WHY does Apple, parading around as a pompous paragon of privacy, even allow this crap?

Good alliteration.

Apple doesn’t enforce what the app does with app data. Apple makes sure that if the app uses a platform API that is sensitive, it gets your opt-in (or prohibits the use of the API altogether). Apple makes sure that the app publishes a privacy nutrition label. But what the app does inside with whatever data you choose to give it, that’s up to the app.

If you voluntarily choose to give data to the app, what the app does with it is your problem. Apple just tries to make sure the app can’t take data that you haven’t chosen to give it.

[lxgr]

That would be a nice solution, but there is no "allow app to persist data beyond deletion/reinstall" user-grantable permission on iOS.

[Razengan]

There is no indication whatsoever that an app will leave behind an Eternal Cookie on my device, nor am I given a chance to prevent it.