That still seems like an curious criterion with which to judge someone's humanity. Gary Vaynerchuk, DHH, Zed Shaw, and a lot of the people admired by many HNers are very self-aggrandizing.
Sidenote: It seems that people like this have to deal with a trough on their way up where a lot of judgment gets thrown their way for their outgoing manner. If they hit it big, though, that seems to be quickly forgotten and everyone loves them. We've seen it with all of the above. Those who fail to cross the trough, end up forgotten.
Writing things on the Internet is part of human behavior.
What a person says reveals aspects of who they are. The Internet is not some special place that is exempt from all normal expectations of conduct that otherwise hold in meatspace. Just as simply being part of a business enterprise does not exempt one from being judged as a human based on your behavior.
Also note I said "suspect" not "knew for certain" or anything as extreme or decisive as that. Important distinction, and one I chose intentionally when picking that word. :P :)