Also, when I send an email to my friend "laserpants@something.com", sure the data captures the send-to email address. But the data doesn't know who laserpants actually is, nor does the email content get saved. I'm not saying laserpants can't be found if the law decides to investigate, but I doubt it's a matter of pressing a button to bring up the real name of laserpants. Especially if laserpants uses different email addresses and a shared internet.
My take on it is privacy is dead or nearly and we have to have good legal protections of who can use what data and when. The privacy arms race will mostly be won by big government with lots of resources and enough willing/foolish patriots (Depending on your point of view).