Counter-anecdote: I have a smallish build and have well-tuned satiety, but a consistent measured TDEE of 2400~2500 kCal, and would go hungry and waste away at 1.5k.

I agree there’s no substitute for measuring your numbers. But meticulous calorie and weight tracking is probably a big ask for the average person, even though it’s imo absolutely necessary for controlling your weight one way or another.