I think it all really depends on how we define disordered eating. It's exceedingly complicated and messy topic. E.g., Some people argue that eating in a way that leads to obesity is disordered.

In my book I investigate why most fad diets fail (it has to do with a variety of factors) and how we should think about eating for weight loss given what we know about starvation effects, shortcomings of fad diets, modern food system, etc!