Who Speaks for Geek Culture?

No, it does not. The great thing about tech culture is that there is no leader. Most people who are considered influential, is due to merit, and even then it's only within their area of expertise that they are considered authoritative.

The fact that there is vigorous debate over Larry Sanger's article proves this. It wasn't as if Larry (not that he would) declared that geeks were anti-intellectual, and BOOM! that became the common wisdom.