This is a criticism of the author's backgrounds rather than the content of the article.
True. I myself try to read articles without looking up the authors.
It is hard though. When someone makes an extraordinary claim I feel the urge to look them up. It is a shortcut to some legitimacy to that claim.
"Oxycodone is Not Addictive" by employee of Perdue Pharma.
It absolutely makes sense to criticize the author's background.