The idea that being employed gives your day-to-day life structure and meaning is hardly a new one, and the rest of the post just came across as a bit smug.
Also noted that after clicking through the Amazon affiliate link the top review on the book also used the Nietzsche quote seen later in the article.
I think there's a lot to be said (socially, psychologically) on the subject of millennials having trouble finding work, but there's plenty of better journalistic pieces that appear on HN already.