1
He can be argumentative and over-eager to fight, and a couple of times has been unduly impolite to me.
But in general, he's a considerably more likable saberdweeb than average :- ) IMHO, and much of the pugnaciousness comes from the fact that he was the one who personally absorbed practically all of baseball's anti-saber condescension for about 15 years.
Long before ANYbody knew who sabermetrician #2 was, MLB manager Sparky Anderson once referred to James as "that short, fat little *****" ... consider how a guy like, say, Jason Churchill would react if Hall of Fame managers 8 inches shorter than him were making fun of his height :- )