I think the criticism is more about the selectiveness of diversity. Companies in SV are very keen on establish practices to bring about the hiring of more women

I think the criticism is more about the selectiveness of diversity. Companies in SV are very keen on establish practices to bring about the hiring of more women, African Americans, and Latinos often with the justification that a broader set of viewpoints is crucial I'm creating a good working environment. But no one bats an eye when most employees can't name a single Republican or conservative on their team or department. It's easy to conclude that this whole diversity initiative isn't actually about bringing in people with different viewpoints. For what it's worth, my current employer has easily the most diverse tech workforce in terms of gender and race but it's also easily the most monocultural company one I've worked at.