This is a nutball organization. If you're going to seize on this statement as the truth you also have to accept their basic premise that electrical production of any kind is unsustainable and destructive.
"The only truly green sources of power come from the earth and dont require destruction. By that, we are talking about photosynthesis and muscle power. Permaculture, as well as other traditional subsistence methods such as hunting, animal husbandry, fishing, and gathering, must be the foundations of any future sustainable culture; otherwise any claims to being green will be falsehoods."
I'm not sure these are the guys we want to point to as an authority.
They want ant idyllic pastoral agricultural civilization circa 1880 and no population over a billion or so....................