First, 23rd century is a very long shot.
It's like trying to predict 20th century from 17th.
You can only realistically figure out something about mid-21st.
And I bet the events described by you would cause people to start caring even less about privacy.
What's the big deal about data becoming public if it's old and nobody reads it any more? Because each second produces more data than you can possibly care?
I was being a little tongue-in-cheek as far as predicting the 23rd century (the article was about the DS9 era of Star Trek).
My thesis is that people do care about privacy but are motivated to share in order to portray a certain image. They don't want all of the ugly stuff revealed. So I don't see how people will start caring less about privacy when they realize that they don't have any control over their image.
And I bet the events described by you would cause people to start caring even less about privacy. What's the big deal about data becoming public if it's old and nobody reads it any more? Because each second produces more data than you can possibly care?