In my opinion, the best fix would be to steelman the argument as much as possible. Call it the physics diet, not the virtue-theory of metabolism.

“Physics diet” and “virtue-theory of metabolism” are not steelman and strawman of each other; they are quite different things. Proponents of the physics diet (e.g. John Walker) do not say that if you want to lose weight you should exercise more -- they say you should eat less. EDIT: the strawman of this would be the theory that “excessive eating actually causes weight gain due to divine punishment for the sin of gluttony” (inspired by Yvain's comment).

Seriously; that was intended to be an example. What's it matter whether the nodes are labelled “exercise/overweight/internet” or “foo/bar/baz”? (But yeah, Footnote 1 doesn't belong there, and Footnote 3 might mention eating.)