An average user, certainly, has no idea what is going on by these changes.
He ignored the public stats in order to make a point.Further, this change is important, and there was a lot of work and testing to make sure people understood the results. Jason assumes his intuition about what users understand is more accurate than this research.
In other words, he doesn't know what he's talking about.
If Facebook wanted to stay on the safe side of things, they'd have kept the default as the more private setting and then show some kind of prompt saying "Hey, this is a new Everyone setting. This is what it does. Would you like to try it?"
I seriously doubt most people know what 'Everyone' means. Or what can happen to data that's syndicated to search engines and is no longer in Facebook's control.
I'm currently in the process of reaching out to my friends who don't follow tech news to make sure they know what they've signed up for with the new settings. After explaining the 'Everyone' setting, responses are usually along the lines of "Facebook is turning evil."
How do you know "there was a lot of work and testing to make sure people understood the results"?
Why is this change "important?"
IOW, how do I know you know what you're talking about. Based on your profile, it doesn't look like you have any official connection to Facebook.
Also, clicking on his username indicates this clearly (at least now).
I probably should have mentioned I work at facebook and all comments are my own - mainly to insulate myself. I just added this to my news.yc profile "[every comment on this site is my own opinion, and not that of current or past employers]"
I think it is silly to suggest as some have that every comment requires a caveat. The comment replied to Paul Buchheit, also at facebook, who made no caveat. My profile is a click away, as is google http://www.google.com/search?q=ivankirigin
People get overly sensitive about this. I don't think my employment changes my original comment at all.
Also, I'm pretty sure his "search" theory is mostly nonsense. From what I can tell, the change is driven by a genuine belief that these settings provide greater utility for users. This has certainly been my experience sharing on FriendFeed (which is more public) vs sharing on Facebook, so I tend to think it's correct.