I think the article might be worth reading from a how-not-to perspective. It seems very much like the author is applying paradigms from object-imperative langua

I think the article might be worth reading from a how-not-to perspective. It seems very much like the author is applying paradigms from object-imperative languages to a functional language and meeting resistance. It's perfectly fine to not know how to express things idiomatically when learning a new language that uses an unfamiliar paradigm, but a critique written from that perspective is only useful in that it's a list of indicators that you're not using the language effectively.