Maybe so, but if that's the case, isn't the entire process a case of unspecified, morphing requirements?

I'll flatter myself and assume you liked what you saw in what I wrote. But if that's the case, why code at all? Why not just sit down and have a short conversation?

I feel like there's something about a rigorous, test-of-endurance interview process that feels professional. "We can't afford to hire anyone but the best."

So experienced hackers with good instincts end up ignoring them in favor of a gauntlet they know is not representative of actual work.