He found, maybe by brute force, maybe some other way, a comment signed by whoever mined block 9 (Satoshi himself?) and now he's using this to claim that he just

He found, maybe by brute force, maybe some other way, a comment signed by whoever mined block 9 (Satoshi himself?) and now he's using this to claim that he just signed this himself. He's making all this up. Unless the message signed contains Craig Wright's name it's not proof of anything.