You know what is bad science, ANCEL KEYS. That is bad science. You know what is really terrible, that you are going around trying to convince people of a tautology that has become essentially a morality play
Obesity is the only medical condition still treated in a Biblical way. We would not blame cancer patients for their condition, But we do regularly with obesity. (And yes, they are connected by the way, at the hormonal level)
So explain to me, who a diabetic can (and does, it is a very well known side effect) with insulin while maintaining everything else equal? For me this is hardly theoretical.
Incidentally, you know when I finally lost some weight? It has nothing to do with CICO, since at times I now eat more calories, because we all know calories are all the same. When I ditched the standard advise and adopted IF and KETO, why? HORMONES my dear.
If I were a single person with this experience, sure whatever, but I am not. And there are people doing some serious research (in some rediscovering what what already knew before Ancel Keys and his band of merry men) and drawing even more information.
Color me one of the converted to the emerging science, at a very personal level. So go cry me a you know what at this point. But the current Diabesity epidemic, we owe that ot Ancel Keys and his so called research and we know that what did not match his expectations remained hidden for 50 years.
Unfortunately, paradigm changes don't happen until a lot of people literally die,., but we are in this hole because of crappy science.