I'm not a Sam Altman fan but this really seems like nothing. If he was personally going around telling people he was YC's chairman that would be quite different, but this is just a few documents that he obviously didn't write himself.
From the article:
> Yet, Altman has been claiming the chairman title for at least three years in securities filings and a website associated with the AltC Acquisition Corp., a special purpose acquisition corporation, or SPAC, that he registered in 2021.
The document was signed by Michael Klein and Jay Taragin (whoever they are), not Sam. But that wouldn't make much of a story, so Sam it is.