Sean-Paul Kelley likes being called a flaming jackass (even in the transitive sense); I suppose that's his right. I don't know where he's seeing this “celebration among many bloggers about war” that he claims to observe in the comments on Pdawwg. My guess: he expects people who support war to be “bloodthirsty chicken hawks,” so in his mind he projects this onto others. Again, as I said before, it's a mark of unjustified smug moral superiority, or more succinctly the attitude that “I'm better than you.”
On the other hand, Alex Knapp has his head on straight, with the takedown I'd have posted yesterday if I had been (a) entirely conscious and (b) a better writer.
Also see this post.