Thanks for sharing your thoughts and providing concrete counter-examples to my article!
When I wrote this article I had some of my younger colleagues and programmers in mind. I wanted to push them out of their comfort zone of relying solely on while/if statements for writing code.
My hope is that once they have learned of the more advanced OO/functional concepts, they can make better judgement of picking which tool to use. I certainly don't wish for them to forget about fundamental CS concepts!