A cryptographer named Michael Clear declined the wonderful offer, after he was said to be Satoshi. Accepting the false claim would have made him famous till date but he made the right choice
It couldn't because we know the exact and prompt means to identify the real Satoshi, if he could sign a message or not is one of the best m ways and moreso, why should he accepts or claim what he's not, that should be impersonating enough and a thing of big shame on his reputation provided that he's reasonable enough to realise the fact, Craig among many others were also struggling on this self proclamation to be Satoshi.
Hence, someone is in court paying lots of money to lawyers claiming to be Satoshi, what an Irony. I think the people decides who is Satoshi then its left for the person to accept or decline like Michael Clear a good man - a bad fellow would have used the opportunity to execute illicit operation on bitcoin and extorting funds from those that sent him mails.
This is what their type want, money, recognition and power, they are the types that like to claim on other's people efforts and works as theirs, everything they know how to do is plagiarism and still yet they don't want to aggree to the fact that what they are doing is wrong.