The point of the article was that you can easily get that performance boost in any language - especially when network latency is involved; it will be there no m

The point of the article was that you can easily get that performance boost in any language - especially when network latency is involved; it will be there no matter the language used. You can make fast things in C++, but your competitors using Clojure will crush you. Developer performance isn't about sacrificing app performance, but rather getting there faster and making sure the competition doesn't catch up.