In my opinion, it isn't gluten, carbs, or fat that's making us fat, it's lack of activity.
"So even if you stick to a gluten-free diet, it can actually lead to weight gain. A 2006 study in the American Journal of Gastroenterology followed 188 people with celiac disease (half of whom were overweight or obese) on a gluten-free diet for 2 years and discovered that 81 percent of them gained weight."
Is Gluten Making Us Fat? | Fitbie