So I increasingly have few criticisms of what Yudkowsky is saying but find him in the tradition of many intellectuals who are good at writing chains of reasoning onto paper (or the web) but kind of garbage fires of personality who attract other garbage fires of personality.
My main experiences of him and his followers are: 1. Being blocked for no clear reason on twitter 2. People not understanding jokes 3. People attacking my person repeatedly 4. Close to zero substantive engagement 5. Lots of self-congratulation everywhere