I wonder if the author also thinks that YC should reject founders who support trump? Just add a little question to the application form:"Do you now, or have you ever, supported Donald Trump?" The next stage could be "Do you now, or have you ever, associated with a Trump supporter?" - "if so, please list their names here so we can keep YC pure by excluding them from YC, and pass their names to the re-education brigades"

What could possibly go wrong? :)