I see no reason for claiming to be satoshi nakamoto while he is not and he tried the best to make sure that the world believed he is satoshi but on the other hand he failed because his claim werent back up with some facts that he is satoshi or even signed messages from his bitcoin address or make some transactions from his wallet to prove he is Satoshi, then fine, he could have won the battle, but instead fighting a blind battle with no facts to show he is nakamoto.
BTW, 12 months is actually very pitiable to him otherwise, country like ours he could be sentence for 6-10 years imprisonment for allegedly claiming what he is not, anyway that place would serve him as a resting place to enable him use his right senses.