If the implication here is that Sam Altman and OP are pompous enough to think we care what they think about the state of the Tech economy, then wouldn't the same logic apply to the authors who write "the Tech bubble is bursting! The world is ending!" articles?
Sam Altman and the OP posted their own content to Hacker News. The articles are usually posted by a totally different person than the one that wrote it.
In any case, there is a difference between writing bombastically about a situation you are financially involved in and a journalist writing an article about tech.