> I'm being pretty overt that when people make that claim they are often being dishonest. They know they are eating too much. There are psychological issues underlying this, but if someone tells you how little they eat yet they're gaining weight, they're likely lying.

The fact that they are overeating doesn't mean that they aren't also feeling very hungry, truthfully. And again, neither you nor I know if it's a psychological issue or metabolic or endocrine or anything else (or a combination).

These are the two key facts that the article is discussing and you are completely ignoring in favor of feeling superior about your self control ("I can go through a movie without eating a bucket of butter-filled popcorn").