No, OP is absolutely correct. We have open-label studies come out all the time (one posted here a few days ago about a long covid treatment) making grandiose claims and not taking into account the placebo effect at all. And many physicians and scientists are particularly bad at this, believing that stress and emotions can't cause significant physical illness. I can't count the number I've talked to who have bizarre ideas about this, including many of the top scientists working on certain diseases (of which I've suffered myself). I'm not going to post any examples here as I don't want to get into a mud slinging match.