This seems a bad argument. Our lifestyles, diet compositions, bodies, ability to diagnose medical illness or cause of death, understanding of nutrition, and lifespans have all gone through several revolutions throughout the years.
The clickbait headline of the article ("pure poison") and and author's comments were inflammatory, which is likely what you're reacting too. However the article does go on to talk about the link between saturated fat as a well-known risk factor for heart disease.
Given the lifestyle trend of humans toward more sedentary living than our hunting/gathering ancestors, suggesting people of today be careful about limiting their intake of saturated fats is a good thing.