It's Taoist morality. Taoism believes in allowing one's self to flow with the Tao like a log flows with a river(damn they like their water analogies). The water is moral in the Taoist sense because it does not try to destroy the mountain, or slash the earth. It just does.
And a sword doesnt try to penetrate flesh, it just does. Just let it flow through your body.

As to environmentalism. Destroying the environment ranks pretty high up on the dumb scale. If you destroy the environment you destroy yourself because we rely on the environment to provide food, water, oxygen (mildly important), and general enjoyment. Destroying it is like a runner cutting his leg off.
Brilliant. Why didnt I ever think of that?

I agree with what the article says that worshipping nature and treating it as divine is wrong. However, that is different from respecting it. We should respect nature enough to care for it as it sustains our life on this planet.
The article doesnt say its fine to destroy the enviorment. Its only stating that there are people out there who seem to think we are not natural and that worshiping nature is silly as it has no morality. It just is.