Controversial opinion here... Why are the vocal hacker news commenters against segregated groups? For instance, what would be the issue with places that have selective hiring for individuals that meet their cultural composition and why does that bother you specifically? Isn't that the case in every location? In this case, there was harassment, however generally it is understood that "birds of a feather flock together…
A few years ago I would have said that companies should be apolitical and that they should hire the best people available and have everyone act somewhat professionally.
But now it seems everyone wants companies to be political, liberals want companies to be pro gay marriage, christians want companies to be against it. When companies didn't have to pick sides a liberal and christian could work at the same company, but no it seems we're creating more and more segregated groups.
Then to make matters even worse we have social media policies that prevent you from voicing any opinion not shared by your corporate overlord.