Perhaps that was a slip of the tongue, a mistaken oversimplification of how Zuckerberg intepreted things. It sure doesn’t seem true, though. Last December people who had never changed any of their privacy settings had their new defaults set to share far more content publicly, with the world at large. The prompt to re-evaluate was a chance to opt-out of the new changes, but those settings and the defaults were certainly changed.
Kirkpatrick is really getting to another problem that Facebook is facing: trust.