This piece is sufficiently vague and fluffy that it acts as a bit of a rorschach test for what people want to get annoyed about. Although that doesn't necessarily make it totally bad.
This sort of vague philosophical-type thinking seems to be pretty popular amongst some medical professionals. And I never really get the impression they're that good at it - a lot of assertions without proper evidence, muddling similar but different concepts together. Basically just talking vaguely and broadly about concepts in a way that seems clever at a distance, but if you look closer is confused and lacking in substance. There does seem to be a lot of that sort of thinking amongst BPS type theories and thinking about things like functional and somatization disorders.
Anyway so I struggle to see the exact point this piece is making. Maybe he's just saying people should have more empathy for patients and listen to them more? Or maybe it's an argument for N=1 trials becoming the gold standard? There's really a lot of room for interpretation, although I think it's more likely to be the former.
I feel like people are being a bit harsh on this guy for writing a pretty benign piece though. Some things he wrote in a paper he authored do seem to indicate he holds a fairly BPS view of disease but I don't know if that's worth discussing.