It's not. But they chose to post the video and 299 replies on this forum speculated on all of it and whether or not he did, it was approved etc. I hope he didn't. Seems like a nice guy.
I have mixed feelings about it. If you recall, Apple security accompanied the police in raiding someone's house and trying to ruin their life over posted images of an unreleased phone in the past. Releasing unauthorized leaks I would think would be dealt with severely internally just as well. Apple has become quite a leaking boat now though, so who knows.
The reality to me is that this young lady is benefiting from the "leak", and if posted a little later would have still been benefiting personally from Daddy working for Apple. Its a misuse of his position at Apple in either case.