Why would a clean, user focused "export my info" tool also be exposed to apps? I can't imagine a situation where those two features would be intrinsically tied. This is about an end-user-side button which dumps your friend network 'address book' into a simple machine readable format and downloads it to the users local drive. Implying such a feature would/could, accidentally/maliciously cause a user's contacts to flood out uncontrollably to 3rd party app developers reads like FUD.
I already feel rather uncomfortable about all the information apps can gather about me without me ever having to do anything. Correct me if I'm wrong, but wouldn't it be very easy to restrict that, and only let my friends have access to <i>my</i> personal data? I added my friends, I don't mind them having access to my data, including my email address. But apps my friends use are a very different matter.