The "it's an over-eating problem" fallacy keeps getting introduced by sugar companies. It happened in the states, then moved to South America, and is currently hitting India [1]. It's a playbook by the sugar industry that echoes of the tobacco industry's old tactics.
Suddenly, societies that have maintained healthy BMIs for thousands of years are having obesity problems as sugar gets introduced. They didn't develop gluttony overnight - it's a sugar problem.
[1] https://www.nytimes.com/2017/12/26/health/india-diabetes-jun...
Edit: Sugar is basically weaponized carbohydrates.