He is also a miserable human being.
He most assuredly is not.
He's certainly done great violence to the vanity of a lot of folks who think that their opinions are entitled to automatic respect.
In my experience, he is a liar, a spreader of untrue stories and gossip, and self important to the point of absurdity. He is also nasty, ill tempered, and dismissive of the very people that give him accolades. Still, he is a literary genius, and his contributions to the genre and to literature as a whole cannot be denied.