Eliezer Yudkowsky, shows little interest in running one. He has consistently been distant from and uninvolved in rationalist community-building efforts, from Benton House (the first rationalist group house) to today’s Lightcone Infrastructure (which hosts LessWrong, an online forum, and Lighthaven, a conference center). He surrounds himself with people who disagree with him, discourages social isolation.

Ummm, EY literally has a semi-permanent office in Lighthouse (at least until recently) and routinely blocks people on Twitter as a matter of course.

Blocking people on Twitter doesn't necessarily imply intolerance of people who disagree with you. People often block for different reasons than disagreement.