Looking at this exchange is indicative of the limitations of a starting point that doesn't lend itself to any other than its own ideology;
you said it...in a word. Thermodynamics. It doesnt matter how few calories you eat if your body cant burn them. Even with exercise, if your thyroid and adrenal system isnt functioning properly, you wont lose weight. It's a FACT.It's in response to a deleted comment, the response to it is one I've tidied up for your reading pleasure;
Your body burns calories merely by the exchange of oxygen through the processing of breathing, [precious flower]. The ONLY time a body isn't burning calories is when you're dead, [sweetness].The most important point to make is these pieces of information do not contradict each other. I'm not sure about the specifics of how the adrenal system and thyroid function interact with the maintenance-or otherwise-of adipose tissue, so I can't really confirm or deny the comment on its face. What I can say though is that the function of the glands is key to understanding fat metabolism, of that there is little doubt.
I agree with the second comment which simply draws attention to what is missing from the much taught weight hypothesis. He goes on;
Do you realize that WHEN YOU SLEEP you, literally, burn calories. Normally, a person burns about 0.42 calories for every pound in one hour of sleep. For instance, a 150 lb. person burns about 63 calories in one hour.The first commenter's conclusion comes from her basis of understanding in the only one taught. She's assuming-as we all do to some extent- that fatness is all about energy or intake not being (fully) used up.
Yet as the second commenter says, the body is always using energy, so how can people store much of it beyond a certain point? His issue is the erasure of hunger. In supporting this hypothesis, it has to go from a response, to random conscious decision. From something that fits into the context of metabolic function, to something somehow outside and imposed upon it.
His criticism of her is criticism of the basis of his own rationale, rather like those who criticise HAES, just end up criticising the notion that a healthy diet/lifestyle increases, maintains or creates health.
His stance is rage and hate, but he has no real quarrel with what she's saying without having a quarrel with himself. Any lack of science literacy comes from those who provide what purports to be 'science' the same he's basing his comments on.
His quarrelsome stance uses her (fat) body as if it is making an argument against his. As with all fat haters and 'obesity' promoters, their real argument is with the true nature of biology. They just sort of anthropomorphise that into an argument with any random fat person.
Fat bodies stand in testiment to their falsity. If they can get rid of them, their delusion can triumph. If they cannot get get rid of fatness, they can get rid of fat people, from the public sphere.
This causes them to twist and turn. When the AMA made their loco-lying position, haters expected us to welcome it as some kind of status symbol. They raged against [giving us] excuses. Such velocity had their fury, that it took a while for them to catch on that few self respecting fatz had any interest in such lying nonsense.
When their brains finally adjusted, they immediately switched tack and said we were in denial. That's if they didn't just treat us as if we were the AMA.
Ditto when the phony addiction babble came up, they sneered that we felt we were better than (drug) addicts.
We are told we look for excuses, when we refuse what could be deemed excuses, we are criticised for that by the same people. They must know their fakery is becoming more and more obvious, they're just to far gone, leave them to it.
The second commenter, like others presents this kind of thing as evidence of fat people's dishonesty-your fat body is using up so much energy, you must be taking in so much more. This is where 'obesity' mongers have always leveraged the shaming of fat people to suppress our potential input, to avoid any real progress.
It ends up with fat people being unable to discover/reveal surprising or unexpected information about human function, but that is exactly what we have done. This refusal to allow us to offer out discoveries to others, not only reduces progress for all, it turns the surprise of being human into a symbol of slim people's status.
I say this to the white coats and freelance internet trolls: We won't be silenced anymore.