Not so. It is not necessary to identify Satoshi to prove by clear and convincing evidence, or even beyond a reasonable doubt, that a given individual is not Satoshiand moreover, that false claims of Satoshihood are just that.
I am certain beyond a reasonable doubt that Craig Wright is not Satoshi Nakamoto. I dont need to identify Satoshi to reach that certainty.
That is fine, but comparison with Anastasia is not good in this case, and that is my opinion.
I don't have to agree with everything I read on bitcointalk forum

Faketoshi created new identity as nobody knows Satoshi identity.