It also relied on self reported physical activity! Ha!
It is worthless to extract anything regarding mental heath and exercise from this study.
In other words, would I put the overview on the coffee table in my wife's office (she's a psychiatrist) for her patients to see? Yes.
Are you a sadist?
Let me give you a personal anecdote. I suffered depression and anxiety and fatigue for years. I tried to be active but it made me feel worse. Turns out I had late onset partial biotinidase deficiency. I take biotin, my depression and anxiety are gone and now I can work out like a normal person.
What good does this study do for people like me and the probably hundreds of thousands of people like me? I would in fact it harms people like me because it lays a simple cure over a complex and diverse issue.
Almost without exception, the people she sees are looking for ways to help move themselves forward. By the time they get here, they realize (and it's part of the education that goes with the practice) that mental illness is extremely complex, not every treatment helps everyone, and there's no single magic bullet. And yes, serious metabolic workups are a big part of the practice.
So while I appreciate your perspective, I take issue with the claim that (in this context) it is suggesting laziness as a cause for their illness, or sadism on my part.
I am telling you, as a person who suffered from suicidal depression, that seeing a pamphlet like that in the past would make me feel worse, not better. But why listen to me? I am only the patient.