That is not actually my position. My position is that psychopsychiatry is largely theoretical, and hence unproven and much of it will be wrong. I cannot a priori identify what is right or what is wrong, we need the science, and it does not exist. Further I do not doubt psychology has an impact on disease and coping mechanisms. My arguments lie elsewhere. I do however point out that the notion that mind causes disease, not impacting or modifying but causing, has a history of utter failure in the scientific literature.
One particular point is that we need to separate scientific psychiatry from non-scientific psychiatry and from pseudoscience. Right now its a terrible mismash. Science is the main method we advance knowledge about complex causal issues, and even so it has a real problem with dealing complex networks of inter-relating things. Only sort-of applying science leads to pseudoscience.
Right now there is abysmal pseudoscience being passed off as sound science. That is creating a lot of issues we see in ME.
I would be happier to see psychiatry split into neurology, psychology, sociology, and alternative medicine. Its a confused mismash of these four right now. Even much of biopsychiatry is flawed because the diagnostic categories are mostly theoretical and unstable. Just look how they keep changing. They lack biomarkers or indeed any definitive markers at all. How can you do good science when you are unsure just what problems you are really looking at?