The destructuring mechanisms in Clojure are very, very powerful. For some reason this author does not seem to like them, even though they reduce his 7 line CL p

The destructuring mechanisms in Clojure are very, very powerful. For some reason this author does not seem to like them, even though they reduce his 7 line CL program to a 2 line Clojure program. What destructuring? I didn't see any in the example.