Comment by kingstnap

On the individual level it is a discipline problem. But the fact it has become an individual discipline problem is exactly the core issue.

If you turn things into individual discipline problems then surprise you get population level issues. As you pointed out people have other things to focus willpower on thats not this.

The fault, as it often does, lies in marketing. Turns out heavily marketed, hyper palatable food, designed to be minimally satiating so you maximally over eat is great for profits and terrible for obesity.