You're making it complex. Although what you're saying is true, they are just accessory points. "Dumbing it down" to extremes to make points as FrugalCopywrite has done above makes it easier to follow and puts emphasis on the fact that it all comes down to calories in - calories out when losing weight.It means you're being lied to there's a lot more involved than just calories in and out but those who haven't taken the time to research and understand it will just tell you that and when you come at them with your own observations that are actually happening to you they'll just think you are wrong.
Truth is those burgers will spike your blood sugar levels causing a huge release of insulin (exponential response especially if you're insulin resistant) in the blood making you feel lethargic and tired. Whereas if you ate the same calorie amount of foods that had a lower effect on the blood sugar such as higher fat and proteins you wouldn't have the spike and you'll feel good.
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Anyway it's pretty complex stuff which is why everyone dumbs it down to calories even if they're nearly irrelevant. If you're interested I suggest reading Good Calories, Bad Calories and it goes into it all in depth but it's a very heavy read.
To make a comparison, it's like FrugalCopywrite is telling those who want to rank higher to 'just build links', while you are preaching on page, link diversity, proper anchor text, etc.
To lose weight period it's calories in - calories out.
To lose weight + _______ (insert: have more energy, get lean, etc.) it's calories in - calories out +.