Do you think the same obese people who claim they cannot lose weight no matter what will even be overweight if they were born in a different region of the world or circumstances.Humans will resort to cannibalism when starvation reaches a certain level. There's nothing subtle or optional about severe appetite dysfunction. At 6' my highest weight ever has been 235. You could pay me a million dollars and I couldn't eat my way to 350. It's a physical impossibility. My gut would revolt, I'd puke up any food beyond a certain point. Bodybuilders will resort to appetite increasing compounds just to gain the ability to take in more calories because they hit a wall where it's no longer possible otherwise, no matter how much they "willpower" it. Once appetite is increased suddenly the physical barriers disappear and they can eat more without inducing sickness. The same insurmountable barriers that prevent additional calorie intake can work in reverse just as powerfully to drive a person to the verge of insanity, with no relief, until satiated.
Glucagon dysfunction didn't start en masse until the 1970s in the US, about a decade after after liquid sugars were introduced broadly into the food supply. Children exposed to this seem to have their glucagon regulation broken.
Remember when obesity was almost exclusively an "American" thing? In every country that has the same change in the food supply obesity is following the same trajectory about a decade later. Latin America first, now Asia. Widespread obesity in China is a very recent development, and its children where it's become prevalent first.
If I snap my fingers and make you as hungry as you've ever been in your life, and couple that with abundant food availability, you are not going to sit there indefinitely and ignore the drive to eat. The problem is a lack of imagination. If you don't experience it you can't relate to anyone who has.
People who take GLPs say "It silences the "food noise" in my mind." We don't even know it's there until it isn't. Try it sometime and the "aha" moment will come, I guarantee.
Say they are from saharan africa, subjected to a hunting gathering lifestyle like the Hadza tribe or they are from the garbage slums of south east asia where kids resort to sniffing shoe glue to forget hunger pangs.
The bottom line is, one can only be obese/fat/overweight because you have access to extra food or the luxury to indulge on the availability of bad nutritional food choices.