That's obviously false. For most of the companies that HNers talk about, whether they use Python or Rails or Scala or Node is only relevant in so far as it hel

That's obviously false. For most of the companies that HNers talk about, whether they use Python or Rails or Scala or Node is only relevant in so far as it helps them iterate quickly and gain traction, and that's what investors care about. Unless your strategy is dependent on choosing a particular technology (which, in the context of the web, usually means "build around the JVM"), your tech stack is not remarkably relevant to investors as long as it's part of an active ecosystem.