Earlier quoted context omitted.
Obesity started to be a thing in the last 100 years. It wasn't evolution.
You misunderstood what I said. We evolved in a world where food was scarce, hence why we evolved to overeat once we do find food. In the past 100 years, food has no longer been scarce (for people living in a first world country), hence the obesity.
Blaming it on food scarcity isn't the whole story. It's not enough that food scarcity stopped. It wasn't carbs either, as there are cultures without carb scarcity that weren't obese(Though we do put corn syrup in everything now).
My guess is that it's a dopamine addiction. We understand that sometimes we must do things we don't like, but the idea of eatings things we don't enjoy scares many people.
It's also how corps package food, and the ones that make their foods the most addicting(the most dopamine -> the most pleasure) survive.