I dunno that we disagree. My point was just that its easier to put a finger on the scale when any improvement, non-improvement, or even the existence of a disease itself is more subjective.

Like, we can't sell treatment's for people's sixth thumbs because virtually no people have a sixth thumb and it's unambiguous that they don't-- and even among any who do it'll probably be clear if it needs treating or not. But I can sell a treatment for your hyper-meta-ego because who is to say if a person has one of those or not or if my treatment of it is successful or not?