Excellent description.
It is worthwhile to debate him though. For one thing, I learn some history gathering the information to refute his posts. For another, posting the correct facts means that the lurkers are not left with his false picture of history. Finally, it is fun to show him to be wrong -- it's kind of like a cat playing with a mouse though.
He's a better opponent than those who make nothing but "evil slavers" comments to any WBTS issue.
Nothing quite like being damned by faint praise is there?