[mc32]

I guess they the proponents kinda mean that (agricultural) chemicals be near their natural concentrations in arable lands. So there are going to be chemicals naturally, and harmful ones, but in normal non/not very harmful to humans concentrations. And of course earth is made of chemicals and “organic” chemicals (gotta use quotes so as to not confuse with organic chemistry) are also harmful (if they were not, they’d be of little use against pests).