My point is that calorie deficit / surplus focuses on part of the energy system while ignoring part of it. Energy deficit or surplus is a much better way to look at it. I have no shortage of available energy due to my spare tire.
In the past I have pushed to my limits and my metabolism changed once my BF% got low enough. I got cold and tired and slow, all things that any honest pro body builder will tell you happens in a cut. Energy deficit causes that. These days I can do 36 hours fasting regularly no problem without those changes to my basal metabolic rate because I am not at an energy deficit. Hopefully that will change in time as I make progress on the health issue that made me fat in the first place.
I'm currently gaining muscle and losing fat just like many here say is impossible. It only takes N1 to invalidate that claim unlike my depends on the person claim.
The reason they are wrong is because they don't understand that eating is only part of the energy equation. I'm at energy surplus so I can gain muscle.
This is important to me because it is a key piece of misinformation that is spread often that really makes it harder for people like me who need to lower their BF%. Your way makes it impossible for someone in my situation to get healthier. I know because I tried it. My way gives us a path to get back on track, though admittedly a difficult one.