It shouldn't be possible. There is certainly a reason for the ability to edit user posts to exist, but in an age where governments can and do demand details of

It shouldn't be possible. There is certainly a reason for the ability to edit user posts to exist, but in an age where governments can and do demand details of a users activity, such a permission needs to be tightly controlled and properly audited. He's the CEO. He has absolutely no need for that level of access to end user accounts, any more than the CEO of a bank needs permission to silently skim money out of customers accounts.