It would probably be more accurate to classify him as a researcher into Machine Ethics than broader Artificial Intelligence, at least after 2001-2003. To the best of my knowledge he doesn't claim to be currently trying to program an AGI; the SIAI describes him as "the foremost researcher on Friendly AI and recursive self-improvement," not an AI researcher in the sense of somebody actively trying to code an AI.
Basically this: "Eliezer Yudkowsky writes and pretends he's an AI researcher but probably hasn't written so much as an Eliza bot."
While the Eliezer S. Yudkowsky site has lots of divulgation articles and his work on rationality is of indisputable value, I find myself at a loss when I want to respond to this. Which frustrates me very much.
So, to avoid this sort of situation in the future, I have to ask: What did the man, Eliezer S. Yudkowsky, actually accomplish in his own field?
Please don't downvote the hell out of me, I'm just trying to create a future reference for this sort of annoyance.