It's popular right now because the impacts are visibly getting worse. This weather event in Europe is far from normal, and the trend is accelerating.

If we fail to control it, what will happen is that we'll be reduced in population by an order of magnitude or two. We won't be able to sustain the technology we've created, we'll have mined easily accessible minerals and energy, and there is a real chance we will not return to being an advanced species in the same way we are today.

A simple reduction to greens vs not-greens is not helping anything. We can use more solar and wind. We can be more efficient with energy. We can stop burning hydrocarbons immediately and reserve the for material science and we can replace most car energy sources with electric.

None of this is even difficult, it just hurts some established interests who are fighting it with everything they have. They would rather that the planet get destroyed than to lose their wealth and power.

I'd prefer my kids not live in Bladerunner, also, and right now that's the path we're on.