If one reads the article, one would find the absolute majority of the arguments are plain empty claims with little supporting evidence. Citing a single paper, usually over a decade old, is simply proving the opposite; as what they're saying is "out of the thousands of researches done on X (especially medicine), we only found one paper supporting our modern and liberal claim".
And your example of manhours is utterly detached from reality. Only daft personnel think your points are axioms. Of course manhours are a rough estimate! Of course 9 women don't make a baby in a month. Unless you became an engineer last night, I can only assume you are a liberal warrior regurgitating favorable pieces.
What's next, laws on how to think?