In too much of the world, nobody with any kind of power cares. (My own country included.) It's the prisoner's dilemma yet again: why should any of us who might care cooperate, when everyone else is cheating?
We hit that point a long, long time ago.
The situation isn't hopeless, I think, but this talk of "point of no return" doesn't work because it doesn't acknowledge the reality that, as ever, it's political and some people actively do not want to address it.
Today, solar & wind power are the cheapest form of electricity generation, and form the vast majority of new electricity capacity being built. That's likely the primary reason why CO2 emissions have flat-lined and may even start decreasing in 2026. (China's emissions are down 1% in the first 6 months of the year). Worst case scenario is now 6 degrees rather than 8 degrees.
And why are they so cheap? Because Germany and a few others installed a large amount of wind and solar in the 90's and 00's at stupidly ridiculous prices. This volume kickstarted the production learning curve that resulted in the actually reasonable prices we enjoy today.
Germany and others spent billions a couple decades ago, and probably have saved millions of lives and will be responsible for trillions of GDP a few decades in the future.
So yes, voting matters. It matters a lot.
It is simply impossible to have humans voluntarily reduce consumption at scale. The only way forward is up and out.
But we really do seem to have been intent on doubling down since then
https://www.newyorker.com/cartoon/a16995
14 years later and the most politically powerful person in the world spends a lot of time yapping about "clean coal" and the evil of windwills because he feels wronged by Scotland for allowing them to be installed near his golf course.
Peter Thiel (also politically powerful, even if unelected, due to immense wealth) unironically calls a young woman a "legionnaire of the Antichrist" because she peacefully protests for positive change in this area. Instead of thinking he is a dangerous sociopath many people worship him, because, well, he's very wealthy.
I'm nearly 53. We've known about this longer than I've been alive, and have made very little to no significant forward progress, with the slight exception of there being a shift to solar power, but even this was only done because it happened to become more economical than dirty alternatives. And even this small positive concession (that we got lucky on the economics of) is still being strongly resisted by the current US government for political reasons (as increased solar power usage is seen to benefit China):
https://www.youtube.com/shorts/sbvp4ULD6GI
So, yeah, unfortunately I don't think anyone with the power to effect change is coming to save us here. And as individuals we're pretty much powerless to do anything about it.