He can claim that he is Satoshi until he dies. I can say that I'm Satoshi anytime I want. My neighbor can say it too. Even a beggar can say it. My point is anybody can claim that they are Satoshi since Satoshi remains anonymous. For me, I don't even care who Satoshi is as long as I'm using Bitcoin then its ok
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He can say it every day and no worries about it. Nobody is believing in him unless there are stupid people out there who have been hypnotized by his words
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We can't disregard those poor people that will still believe with this man, claiming to be the creator of Bitcoin without any evidence, let's just continue ignoring him I guess anyway we can still enjoy things inside this industry without knowing real identity of such creator, the system will work without Satoshi's present now.