It's true that HN readers are not the intended audience for this -- she's writing for the large set of people who have little to no idea what Hacker News is. But the story she's telling in the article is not "here's how cool HN is," nor is it "here's how terrible HN is." It's a story of how HN reflects the tech culture in Silicon Valley and beyond, how politics and our current culture war intersect with the tech sector whether or not we like it, how declaring a space to be non-political has become an implicitly political statement. And I think in that light, it's a pretty good article.
(And dang, I think getting a third moderator in who's non-white and/or non-male might not be a bad thing -- regardless of their level of balding.)