Yes, 75% of the diet is psychology and not calories-in-calories-out. Obviously CICO is a thing inasmuch as it's a thermodynamic process. Those people who parrot it though aren't really using their brain and are trying to simplify a complex human process down to "eat less". Nutrition in humans is complex and psychology is more important than other factors (assuming you don't really have some limiting health issue). The only way I could lose weight was low carb. It lowered my cravings and I started eating two meals a day (I usually had a sizeable breakfast which I dropped). the first two weeks to a month were rough but after that the amount of will power needed decreased dramatically. I lost 80lbs this way and have kept it off by staying away from refined carbs and eating much much less sugar. Will it work for everyone? Probably not, but even if it works for a sizeable minority it's worth it, and I think it's like hitting a reset button on your relationship with food. You realize you're in control, your physical cravings lessen. I had tried all kinds of diets before, but low carb worked for me.
> Obviously CICO is a thing inasmuch as it's a thermodynamic process. Those people who parrot it though aren't really using their brain and are trying to simplify a complex human process down to "eat less".
Speaking for myself, the reason I often parrot the Cico advice is because it's become "common knowledge" that Cico is wrong, which is ridiculous.
Three years ago I would parrot all the usual anti Cico talking points, about how human fat gain is far more complex, there are good calories vs bad calories, hormone response matters, etc. Then when learning more about this, I eventually understood that really, if I count calories and start eating less, I'd lose weight.
I'm not f that explicitly counting calories is the correct strategy for everyone to create a caloric deficit. Your points are absolutely valid.
But after I lost weight, I've had multiple conversations with people insisting that the only thing that could work is cutting out carbs, or only eating meat, or intermittent fasting, etc. Those are great strategies to try, but it's fundamental to understand that they're only strategies to induce that caloric deficit. Otherwise you are setting up for eventual failure.