Anything that states that an entire macronutrient is more satiating than another macronutrient is crank science and you should dismiss it. High fibre "carbs" for example are incredibly satiating.
This isn't "crank science". This is just lack of knowledge. High fibre "carbs" have a lower glycemic index. Fats have essentially none, and protein is low.
Food -> glucose -> insulin release -> glycogen update by liver/muscles -> leptin release for satiety
Simultaneously:
lower blood sugar -> ghrelin release -> hunger
This is just the difference between burning gunpowder and charcoal.