Makes me wonder if these thoughts are applicable to patient-reported evaluation of (mental) health professionals, which is planned to be tested on a wide basis in Germany next year - knowingly ignoring tried and tested evaluation methods, relying mostly on self-reports only after treatment.

Thorny issue for many reasons, and also a little bit of a different issue (but has some relations of course). I didn't know this was going to be implemented! Hope they do some proper validation