I would somewhat doubt that the hacker would actually release the name of someone who is not at all satoshi. If they are faking having satoshi's dox then they have nothing to gain by releasing any information once he has his money.
I'm prety sure that this "hacker" came to take advantage of the recent situation without having any actual information on the incident. He maybe thought that this would work as
the fappening did, where an actual hacker asked people to pay a ransom in order to release the celebrity pictures. This guy should be happy with the ~1 BTC he got.