Lots of people just need to think in terms of CICO and no dumb diets to lose weight, they just eat less. Other people need to create arbitrary rules to eat less calories since they are addicted to some foods, so they need to cut out all the foods they are addicted to in order to reduce calories in. For example, people addicted to carbs do low carb diets to curb their calories in, people addicted to desserts do a no dessert diet and they will lose weight etc.
The only thin that makes this complicated at scale is that different people are addicted to different foods, so need to cut out different things to start losing weight. But CICO is the basis for all of those.
The only thin that makes this complicated at scale is that different people are addicted to different foods, so need to cut out different things to start losing weight. But CICO is the basis for all of those.