Even if you assume that HR talent differences don't matter, you can't make the same assumption about marketing, PR, and other personnel with much needed soft-skills.
So what you're left with in a single-minded company of brogrammers and soft-bros is effectively a brain drain that leads to the kinds of flubs the author describes that drive customers and sponsors away.
Both lists also contain Software Engineers. Does that mean math majors (esp. computer oriented ones) should take more software engineering classes? SE helped me (although I was surprised how much), I encounter Use Cases and Requirements on a daily basis here. I majored in Computational Mathematics.
Startups really can't afford to let a series of flubs (results of a badly formed team making bad decisions) turn their whole endeavor into a flop.