There is so much harm done that is not litigated, though. It's often not considered harm, but rather "just the way it is in medicine."Medical malpractice. It's a pretty big industry, so I'm not sure that I'd agree it's something people 'often' don't talk about, given, for medicine generally, people 'often' litigate. Or appeal to professional regulators. Or both.
That's harder with mental health, though, where the complainant has the burden of being mentally unstable (for want of a better term), and so 'less reliable' (legal terminology is awkward and clunky).