I remember reading one of his rants from a while back, and it actually caught me off guard. I know quite a bit about javascript, but the way he was talking made me think I was perhaps missing the boat. I looked into what he was saying, and some of it was sort of accurate, but not really relevant.

I think he just has angry-hyperactively-perfectionist-armchair-developer syndrome.

Case in point: where is his brilliant contribution to the JavaScript ecosystem?