Uh, what? It start by saying "I can’t keep track of the number of articles I’ve read about hiring in the past few years. Inevitably, they all follow the exact same format"
That point is true.
The question then becomes "Why does the community generate spammy articles without making any sincere attempt at intellectual progress toward a better system?"
And the answer is probably that it's not in any individual's self-interest. HN members want to whine about not getting hired by google, companies want to promote themselves, people like me want validation.
The only people who have any incentive/interest in objective hiring are companies that specialize in that purpose (e.g. hired, interviewing.io). But there's really no reason for them to divulge their secret sauce, and even if they did, people would probably only upvote it if it let them feel less insecure about getting rejected by google.