I can't really agree here. The trouble with environmental destruction is that not only does it hit the demos indirectly, sometimes it doesn't hit them. The direct sufferers are oftentimes non-members of the voting body. (Be them animals, plants, foreigner humans, or future children.) That is, democracy is necessary, but not enough. Also, this partly explains why:

the traditional left ideologies, including social democracy, were wedded to an industrial idea of progress.

What the industrial idea of progress shares with the Enlightement view of society (the basis of not only traditional left ideologies but liberalism and nationalism too) is seeing people exist in a vacuum, not embedded in a biosphere with several loopbacks and many other inhabitants.

_{*Lunatic*, n.
One whose delusions are out of fashion.}