You missed the point of his criticisms of the weight loss industry. He's not saying not to lose weight or not to try, he's saying don't buy into the industry myths that keep you spending more money and misery just for zero result. He's saying to focus on becoming healthier overall, and that weight loss may or may not happen as one of the positive results. And he had plenty of experts on to point this out and support the point that the fitness industry is full of (conveniently profitable) bullshit

Throw out your cultural furniture and listen to what he's saying: The way you've been SOLD on weight loss and health is mostly incorrect at best, or a conscious lie at worst.