I think the point of the article is that what you described is reality and the "We only hire the best" is the illusion.
That definitely was a good thing. Sometimes, an obvious thing doesn't become obvious unless it is pointed out. Yup, it makes total sense. Every company claims to hire and be filled with rockstars. That's statistically impossible. I guess, 90% of the companies are stating what they wish for, but know that ain't true.