That's the thing they don't seem to understand. This particular fat sympathizer is going on about insulin spikes and low-fat diets and how they sometimes encourage fat retention while ignoring the fact that a low-fat high-carb diet is a choice that person made to be on so it's therefore 100% within their power to change it. They try to excuse obesity as "hormonal" while ignoring the very obvious issue that the hormonal swings are caused by poor dietary choice.