That really means nothing. 100K+ lines of code is an arbitrary number. For that many lines of C++, a similar Clojure solution to the same problem would be a sma

That really means nothing. 100K+ lines of code is an arbitrary number. For that many lines of C++, a similar Clojure solution to the same problem would be a small fraction of that. And many widely-used Clojure libraries are in production all over the industry for many years.