i track clojure growth metrics, it is definitely not declining, and the killer apps have yet to reach market. Python was dominating Ruby at the 10 year mark, and then Rails happened. the metric i cherrypick to try to measure disruption is how many edge innovators an ecosystem attracts, and Clojure aces this. React.js is one of few great innovations that came out of Javascript, and even virtual dom I saw first in ClojureScript at your talk Webfui at Conj 2013!