There's always two sides to that type of thing. Since the brain is so thoroughly a mystery, I see no reason why something like faith healing to be fraudulent. However, some people respond positively to psychiatric drugs even though literally none of them beat placebo in clinical trials. If people want the drugs, they should be able to have them. It's predatory psychiatry and the mandating of psychiatry into law and order that is the main problem. On its own, psychiatry is fine so long as it is not abused. And yes, it is obviously abused a fuckton, but that technically doesn't invalidate psychiatry in isolation.