Your take is as credible as saying the sky is green

You wrong, metabolism doesn’t became less efficient because of caloric deficit, you become lazy and your brain gets weak, so you move less and eat more. Not some magical reduction in burned calories triggered by a caloric deficit. Keep eating less than you burn and you will be able to lose fat until you die.

You’re right, if you could somehow live off less calories then you’d be a superhuman and go against every understanding of thermodynamics

And also, body doesn’t stop vital functions just because you eating less to save calories. He uses fat until you have nothing else lol thats why fat is there in the first place, to be used

But saying no to ice cream and pizza will get harder and harder

obviously, the people that can keep saying no get even leaner and leaner. People that fail

Obviously. But there is adaptive thermogenisis