He/She/They no longer control that address.
It was hacked a while back, I dont think much useful info came of it though. Strange though that "he" has been able to secure his identity, and seemingly not care that "he" has millions of btc just kicking around, but he couldnt secure an email address...
Maybe it wasn't secure because he abandoned the email address and every hint towards him long before it was hacked? He didn't change password anymore after all.
As far as I remember, someone used the password recovery-function, which required to guess the birthdate and someone just brute forced it.
Actually, what Satoshi did, was pretty smart. He just abandoned every account that was linked to his fake persona since they didn't have any link to his real identity anyways.