Ah, one of my lot, I see. Be doubly welcome! I also am passionate about this stuff, indeed, now I am retired from my job it is what I do for a living! I and others around me teach this stuff, and the local young folk are right into it. I had not heard the term 'solarpunk', but it fits. If you are curious to see what we are doing, look up 'Mount Pleasant Natural Resource Centre, Recreate Project, and Mount Pleasant Community Garden'. At Recreate we recycle stuff into useful things which we sell to fund the town's community garden and classes in all of those useful old skills that we can find people to teach. We love it.
I teach bushcraft, wild food foraging, cooking and food gardening, making your own cosmetics, perfumes and first aid products, and brewing and other related skills. I helped start the town's farmers market, which is thriving, and we have a street library and a produce share going, and a new generation coming up who care about the land, and understand that healthy land, thriving plant and animal life and a good community who care for each other will give us all a better chance. I also do a lot of speaking and teaching at garden clubs, environmental events and such, because I don't want to let the skills we oldies have be forgotten. Though I expect environmental and political disaster more than something like the events of the Minnaverse.
Also, if where you live has some equivalent of our CWA (Country Women's Association), those ladies are a treasure trove of skills and experience, and will happily pass it on.
There is so much we can do for the world if we make an effort. And I totally agree about the grass lawn monoculture. I grow a lot of pretty groundcover plants that provide something useful, like habitat and food for lizards and small birds, food for my bees and other useful insects, and in the case of native food plants like muntries, all of the above plus erosion control, beauty and delicious fruit. I should put up on the gardening thread instructions on how to convert a lawn into productive space.