I have to say I think this totally sucks. If I am going to have to deal with Apple stopping things like Game Streaming on my iPhone, then I should at least have the privacy bonuses that they push so much in their adds.
I don’t want any app to be able to track what I do at all. In fact I think Safari should have containers on iOS to keep things like Facebook locked away from anything else.
Delaying this feature does not help it’s customers, it helps the big money making companies to continue to bilk apple customers.