The funny thing is that a lot of Altman's reputation has come from other VCs and Valley-types taking about him in a way they consider positive. Every quote about Altman from another VC is like, "Altman, what a great leader. He's absolutely ruthless, he'll do anything to win: lie, cheat, steal, kill. He has what it takes to succeed in this business."
They say this because in their circles it's a compliment, and nobody ever stopped to consider how the general public might react to it, especially if you claim you'll shortly be the one in charge of world-reshaping technology.