This article is blatant disinformation. Despite what the author said, yes, being fat *is* killing people.

Obesity is the leading cause of death in the developed world and a strong predictor for cancer, diabetes, and heart disease. It costs the developed world around $1 trillion every year to treat.

As for fatphobia, it's a normal evolutionary reaction whose purpose is to avoid reproduction with unhealthy bodies. Fat, age, etc all trigger the same reaction for good reasons: reproducing with these people tremendously lower the chances to have healthy offsprings.