"This only allows users to view your contacts, and look at your photos (not videos) through a limited interface. Photos cannot be forwarded or shared from your iPhone"

only? Isn't that bad enough? Anecdotally I really couldn't care if any of the messages I have get out in the open as for some reason I don't have sensitive content in them, but some pictures on the other hand are really not meant for everybody, especially when they aren't even sorted out yet, and I'm sure I am not alone.

Also: taking a picture of a phone with a picture still preserves most of it and so they can in fact be - what I would call - forwarded.