I just don't believe that he actually means any of this. Facebook's actions over the years do not indicate that Mark Zuckerberg cares about the privacy of his users.
I skim-read this, partly because it’s ludicrously long, but mostly because my feeling about Facebook at this point — more than a feeling, my entire mental map of the company — tells me that this is just a big pile of horse shit.
Put another way: this memo could have said pretty much anything, but as long as it purports to be about Facebook doing “a privacy thing”, I’m just going to ignore it.
Why would I believe them?
It means at least some Facebook employees will be empowered to take action on it, because the top boss said so. We'll see what they end up building.