The fact that there is no evidence confirming the brain disease attribution is, at this point, irrelevant. What we are dealing with here is fashion, politics, and money. I view with no surprise that psychiatric training is being systemically disavowed by American medical school graduates. This must give us cause for concern about the state of today's psychiatry. DSM IV is the fabrication upon which psychiatry seeks acceptance by medicine in general.
Insiders know it is more a political than scientific document.
To its credit it says so - although its brief apologia is rarely noted. DSM IV has become a bible and a money making best seller - its major failings notwithstanding. It confines and defines practice, some take it seriously, others more realisitically. It is the way to get paid. Diagnostic reliability is easy to attain for research projects.