I have the feeling that you misunderstood the article. It doesn't say that fat makes you fat, instead, it displays the lack of ethics and morality in the food industry when it comes to the obesity problem caused by overconsumption of processed food. Due to additional sugars, salts, fats, clever advertising and more, they managed to make people eat more of their processed and unhealthy food then necessary, thus causing a diabetes and obesity epedemic (not necessarily because of the contents of the junk food, but because of the amount of it being eaten).

I never understood this article as a cricicism of fat - that word doesn't even appear to often. Instead, it diligently describes the amount of money invested into making people eat more of this stuff even though more of it is not healthy for them. Moralics and ethics aside:

“How can we drive more ounces into more bodies more often?”