While I can sympathize with his sentiment, I don't think his example of Ellen Pao is really fair. Here is the quote he used:

    ‘She has passed on hiring candidates who don’t embrace her priority of building a gender-balanced and multiracial team. “We ask people what they think about diversity, and we did weed people out because of that,” she said.’

To me, that doesn't imply that they are excluding people because they don't fit some diversity quota, but because they don't share the same values. Clearly she cares about building a diverse team, and it only makes sense that she would hire individuals who also see the benefit of that.