Fasting can cause your body to go into starvation mode, and store fat.
Doesn't mean what you say is wrong, but it might be a myth.
Try it and see what works for you.
When I don't eat at night, I wake up with more energy and a very clear head.
But that might just be me.
A week of no food yes. 24 hours no.
Your body cannot store fat without carbs/sugar feeding your glycogen. it’s all about insulin response.