Not to mention that the Earth is more sustainable With More Carbon, Think green plant life, crops etc and it turns out many of our resources, like Oil, is renewable.
This whole 12K year cycle replenishes earth with resources including gold etc.

What isn't sustainable is how governments, the epa and peta have ruined our enviroment.

The other thing we have to put forward is that Environment and Climate are two different things. The environment has No effect on climate, ie weather patterns over long periods of time.

If you can divide the moochers from the looters, then there is at least an opening for attack.

Yes. If, a fraction of the green/viro plans were put in place, there would be widespread economic collapse. Hardly 'sustainable'. The left think that their ideal socialism will follow. There have been a few instances of sustainable socialistic economies - but only in fiction. (Utopia, Looking Backward, etc.)

But there is no chance that the energy needs of the global economies can be met by these sustainable/renewable wind/solar generators, nor will food production be sufficient.
There will be malnutrition and starvation. There will be widespread violence which will assist and will be a cause of death. Some of the greenies actually want this. Most cannot think one-step ahead. But death is what they will get. Hardly 'sustainable'.

Not to worry, the greenies are just voters and are not in control.
Those in control, call them pragmatists, governments, existing big business and the new carpet baggers, have no ideals or beliefs, right or wrong. They want the contracts, the rake-offs, the licenses, and the acclaim of saving the planet. This is not sustainable either but the decline is slower.