(a) Because the people who pulled off the attack are stupid.
(b) Because the people who pulled off the attack somehow lost access after getting the account but before archiving all the mail, and so made up the good stuff.
(c) Because the people who pulled off the attack are very smart, and are going to slow-drip this out to the media over the next month.
The narrative of the compromise is pretty convoluted, but from what I understand, it was done more for lulz than for politics or ideology. The way I understand it, notification of the compromise went out to one of her contacts at the same time that the password was posted to /b/, so with all of Anonymous trying to log in at once, the account got shut down quickly, and was deleted shortly thereafter.
Give me a break. There are very few organizations less well equipped to respond to computer attacks than US law enforcement. It takes years to convict on computer crime cases, and almost every one of them is front page news in the trade press. You know how many we've had in the past decade?
Trivia question: which law enforcement agency was primarily responsible for responding to computer incidents throughout the 80s and 90s?
You underestimate the cleverness and persistence of a large group of bored internet trolls at your own peril. I am not kidding. Either that, or you've drastically overestimated the security of the Internet at large.
(b) Because the people who pulled off the attack somehow lost access after getting the account but before archiving all the mail, and so made up the good stuff.
(c) Because the people who pulled off the attack are very smart, and are going to slow-drip this out to the media over the next month.
I know where my bet's at now.