What are the drawbacks of a flexible diet?

The host argues that while a flexible diet allows for eating anything as long as there is a caloric deficit, it often fails in practice. Many people have unhealthy relationships with food, and allowing occasional indulgences can lead to cravings and overconsumption. Additionally, a flexible diet may not provide the necessary nutrients, leading to muscle loss instead of fat loss, as the body prioritizes fat storage over muscle preservation.