Most discussion around programming languages I see these days is centered around assessment of developer skills. This is understandable -- we're going through a period of massive technical talent shortage. Almost all tips we read through places like HN, including PG's notes, revolved around shorthand ways to screen developers, not pushing a one-true-language approach (unless Yahoo Store programming skills are at stake, apparently..)
Unlike, say, the mid 1970s, when IBM could take its sweet time training you to program, startups don't have a lot of time to make something happen. Thus, they need a language (and application framework) that will work well, and they need developers that they are reasonably sure will be able to succeed. And they cannot wait six months to find out if they were correct about said developers.
One shorthand way to look for these developers is to find ones who have demonstrable skills in new-ish, hard-ish languages. These are the developers that you know for sure
1) Like new things
2) Aren't afraid to experiment
3) Enjoy a challenge
You have no idea if they're any good to work with, understand software architecture, have foul personal habits, or any number of other reasonable concerns for some other company. As a startup company, you don't care about most of that list (at first). This is why it's a smart move to look for people who have just coded up some crazy Arduino-Haskell-auto-shooting-usb-missile program. Those people will not be unduly dismayed when they need to reverse engineer a wireline protocol one day, and 'pick up couchbase' the next.
All this to say, sure, there's no such thing as an elite language. But, right now, there are a few languages that indicate strongly that you might wish to recruit a programmer for a stint at your startup. Clojure, Scala, Haskell are on my list.