You do realize that ANYBODY could write this and state it's from Anonymous, right? There's douchers that are anonymous and there's good people that stand for freedom of speech. I'll tell you one thing. This guy's a doucher.
Not sure about the whole nine yards of the statement, but in the past at least FB has been rather difficult about deleting profiles and ensuring no data is saved after such a deletion
you can download a zip file from facebook that has every single photo, comment, status, like, and chat log. not sure about the like actually, but facebook records everything, and has been known to sell information.