You can also add agriculture to that list, apparently we should give up the wins of the green revolution and go back to living in this idealized world of Permaculture food forests and tree houses (George Monbiot has some great takes on these ideas).
I really wonder why HN goes off the rails when these topics come up. Is it just a weak science education, combined with the relative accessibility (and acceptability) of health/fitness/exercise self experimentation? Though I also see gut microbiome discussions being shoehorned to any discussion in this space aswell.
I guess I just don't get it, probably the 'tism.