Comment by Snarwin

That's not what the linked article is saying. The point made in the article is that the 'uniq' utility couples together two unrelated concepts--sorting and frequency counting--and this coupling forces you to write more complex code, compared to the version where frequency counting is decoupled from sorting.

All of this is completely correct, but it has nothing to do with bash vs. Clojure. The same decoupling can easily be achieved in either language.