In the case of the surgeon with the knife, there is the intention of healing the patient, the patient's consent that was obtained in advance and the many successful examples in history that justify the use of the scalpel.
Sorry , while I agree with you, I was bit unclear with my example of surgeon. In our culture we have some saying describing the phenomenon that I meant. For example roughly translated 'Give kid a hammer and he sees nails everywhere' I meant that learning and researching about psychiatric disorders tempts to lead seeing them in more often in similar looking cases even that would not be the case when analyzed more carefully.
So that is different thing than the example 'Send person to with low esteem to plastic surgeon and she/(he?) comes back with rubber boobs, but send her to psychotherapist and she comes back with peace in her mind'.
PS. I Don't want to argue about your point since off topic, but we have also many accepted studies showing that part of knee and hip surgical operations have been either unnecessary or not effective. Or you may search youtube for example topic like 'Si joint manipulation' and wonder why doctors merely orders billions worth of pain killers or someone talks you over to 'consent' on weekly physiotherapist treatment instead of, often one time, SI joint manipulation. Worth wondering. No answer is not mostly that doctors would be in greedy companion with enterprises, but maybe even more saddening. They simply don't know enough. Thank lord AI is coming to make them even better professionals. I would have other even more sad examples, but not topic of this thread.