There really are a LOT of mistakes (to be charitable) made by members of the mental health profession, by drug makers, and so on -- LOTS of misinformation, lots of misleading ideas of what mental illness is and what its causes are and how best to treat it. We are still in the Middle Ages as far as understanding of "mental illness" is concerned, for most people.

I was struck a few days ago seeing a TV ad for Abilify -- a woman comes to her doctor saying that the medication she is on is not helping her enough with her depression, and the solution is to add Abilify to her prescription. She takes it and lives happily ever after (as does everyone around her). This is one example of how this kind of psychiatry nowadays pays attention to only one side of the disorder -- brain mechanisms, and ignores almost entirely the other side, which is the influences of our entire society on the person and their brain. Much easier (and more profitable) for the drug company, but worse (depressing!) for the onlooker (like me) who believes that this approach is just plain deceptive.