HN has drifted further and further from reality, which has been very strange to watch. The classic example was someone dismissing Dropbox when they first launched, but now it’s turned into dismissing billion dollar companies after they’ve clearly won.
I get tired trying to explain, and if I'm not convincing anyone, maybe it's me who doesn't understand...but, I feel like the key is to ask yourself, if the placebo effect is something that you can scientifically demonstrate, how would you arrange a control group?
Failure to identify a reason for an apparent effect cannot be turned into proof that "nothing" has an effect. It's just a mental short circuit that people get trapped in.
Easy, just don't give the control group any medicine. Give the other group a placebo. If outcomes are better for the second group, it's evidence that placebos work, just as clearly as the usual trial provides evidence that medicines work.