If I had to venture a guess: venting. The article is not trying to be rational, reasonable or show any sense of perspective. Given other articles by the same author, I'm inclined to say this one simply was never meant to be posted to HN or other fora. Should he not have posted it at all? I'm unsure: it's his blog and he has a right to vent. Perhaps some readers know the context and think it is pretty funny. In any case, I don't expect he was being serious.
The real question is: why does anyone bother to submit or, equally bad, upvote this? And then your question fully applies. My guess is it is being upvoted by people that do not actually have experience working in teams on 'specced' software. It's upvoted by people that imagine this is how it must be to implement a spec with a team.
Yes sorry, I meant submit rather than post. I get why someone would vent (though personally I see it as one of those rants which might have been better done as "write the entry, feel better, don't actually post").
The real question is: why does anyone bother to submit or, equally bad, upvote this? And then your question fully applies. My guess is it is being upvoted by people that do not actually have experience working in teams on 'specced' software. It's upvoted by people that imagine this is how it must be to implement a spec with a team.