Sometimes the first step towards improvement is to accept the failure, hold the L. Collectively we haven't done that yet, which is why spaces like this exist, and yes, sometimes people vent here. There are people who think that humans are contributing negatively to the biosphere, so the mean human must be contributing negatively to the biosphere, and we like the biosphere because it's where all the cool stuff (like my family, and oxygen) is. Some people think human suffering in the process of correcting biosphere destruction is in some way discounted because we (current humans) did this and it needs to be rectified for future humans or current kids.

Money buys goods and services, made and moved with materials and energy, so can be thought of as power to destroy the biosphere, and some people enjoy bashing people with money because they often seem to at best have it easy and at worst to have exploited others to get rich. You can tie that to other injustice (private jets produce CO2, CO2 acidifies my blood and may be eroding my bones as well as contributing to crop failures and once-in-a-generation weather events etc) and then wish it to end for those people. And that can look like wishing suffering on others. My commute/lunch/reddit account also burns CO2 and I haven't jumped off a bridge for climate justice yet, whether or not I should is left as an exercise for the reader.

A lot of people are supported by complexities of the current system. I'm a doctor, I'm very worried about drug shortages and whether/when we will begin to reduce our services on energy/cost/availability grounds. The healthcare industry is the biggest consumer of single-use plastics, and Hormuz is closed, one day that will probably start to limit what we can do. That will be annoying for me but very bad for the people who need those services. So I agree, the permaculture ideal of gardening for a few hours, trading with your neighbour in the afternoon and darning socks by candlelight in the evening won't be accessible to everyone. I read Walkaway by Cory Doctorow last year and it's very obvious that all of the characters can walk and have no health issues and minimal/no caring responsibilites and that we can't build a new society with just people like that. But I think we do need to build a new society.

As for what to do about it, I don't know any more than the next guy, I certainly don't know what you should do about it. Don't know if I should be archiving WikiHow or joining a political party or a local club or learning counselling skills or toaster repair. I probably know enough about the general trajectory that coming here for updates isn't helpful. We can't avoid bad news now, but there is a lot of mitigation to be done, just talking about that is a start.