No, I agree with you. The biggest amount of work in regards to fighting climate crisis, fascism and creating resilient social structures is done on the fringes of society and hence rarely mentioned outside equally fringe publications. While people can learn a lot by joining solidarity networks, their work is often (in my experience) scrappy and inconsistent, because even they are lacking knowledge. Besides the need to balance their own interests with the demands of the capitalist society around them.
I see a big potential for art in that space: Spreading knowledge and positives visions of a livable future without being overly dry and preachy. The Solarpunk genre serves this purpose to a certain degree, but - I think - it isn't hard to introduce similar concepts into other genres, if done with respect, conviction and a basic curiosity to learn from others.
My pleasure.