Politics are involved in everything. Each business decision made by a company the size and scale of YC has political ramifications. Even something 'innocuous' as funding Scribd is a political move - why? Think about copyrights, the lawyers needed to handle trademark laws and to challenge them. Or Soylent - they circumvent the FDA and do direct food testing on people, resulting in contamination outbreaks. Are these not political moves, this policy of 'disruption' i.e. grey-area skirting of existing so-called 'burdensome' regulation(s)?
There are no vacuums anymore, if there ever were (which I doubt). If something is 'about' startups then it is by necessity also about the politics those companies are involved in, especially considering in the US companies are persons with certain rights of expression.
Thanks to the intertwining of capitalism with our representative democracy by way of lobbying, our everyday lives are politicized. Should we suppress these notions or engage with them?