But Jeph isn't just projecting himself into the story. I really cannot agree with that, and I don't think that's what Carl-E was saying.
What he's saying is (correct me if I'm wrong, Carl-E), as a writer, Jeph puts something of his soul into each character he creates, because, well, shit, it's hard to help that if you're a fiction writer. You can create completely original people, whose lives are not yours, who have nothing to do with you, but they carry some spark of your person in their being. There's something of an author in his characters.
And watching other people get it wrong about, or, God forbid, screw around beyond the point of good taste, with your characters? That can't be easy for a dude. So, as Carl-E said, no wonder Jeph hates this place.