By moving Satoshi's coins he is not proving him being Satoshi, he is only proving that he has a private key of Satoshi's wallet. If I steal your Bitcoin wallet's private key and I move your coins does that mean I am you? Probably not. Craig said in of his interviews that he has a bank statement of bitcoin.org domain purchase so I am eager as much as everyone to see the bank statement.
True, but his inability to move those coins does cast doubt on his claim. It's the one thing we know Satoshi has the ability to do, and Wright can't do that.
> Craig said in of his interviews that he has a bank statement of bitcoin.org domain purchase
Which still doesn't prove anything, beyond that he bought a domain name. (Or, to be even more cynical, that he got something that looks like a domain name purchase to show up on a bank statement.)
He bought bitcoin.org domain in 2008 and by credit card. If bank statement says that then he can be considered at least being a part of Satoshi group or even Satoshi himself.