Adapt.
There’s no stopping this train.
every bit of improvement is a higher chance to avoid some of the most catastrophic outcomes (where the unlikely but possible worst outcome being a mass extinction chain reaction which humanity will find very very hard to survive in a functioning manner/without losing their future)
so still worth fighting for any improvement even if we can't avoid a catastrophe anymore, as there is a huge margin between what we still can archive, and what we might end up with if we stop fighting and are quite unlucky
But it's also clear, it won't be enough. Emissions are not only still increasing, they likely won't stop increasing in my lifetime (in the next 50 years.)
We must adapt. The earth is going to get a lot warmer, and wetter in some parts, and drier in others, and sea levels will likely keep slowly rising for many centuries to come, if not millennia.
On the other hand: nuclear war, genetic engineering, or just plain bad luck (carrington event, asteroid impact) seem much more likely to actually wipe out modern society
It's not an extinction level event (not for humans anyway, it may well be for many other species.) It's not a candidate for the great filter.
There will be migration, but over centuries, not a sudden exodus. There may be wars, but what's new.
I don't see it. Maybe at worst it's a temporary setback, not a permanent one.
We'll never know the counterfactual, but I think if coal didn't exist what you would have seen is an increased focus on hydropower instead. That would have meant industrialisation would have been slower and distributed completely differently geographically, but would still have happened in my opinion
e.g. if you want the true climate damage done by a country you would have to look at all the damage done by producing all the goods consumed there. This isn't very practical doable. But if you e.g. mass import Chinese goods you can't only blame China for the climate damage done in context of producing those goods (but neither can you take away all the fault from them, they still decide how to produce the goods in the end and we (west) motivate them to do so badly).
This also applies to Oil producing countries etc.
And some non amicable countries are so because they see no way to handle their economical situation if they tried to change it. But if countries where to work better together they might find a way forward. And sometimes innovation can fix that by itself. E.g. solar cells have gotten absurdly good to a point where sometimes they just out compete non-renewables on purely economical benefits. That is, if your government doesn't do regulations to actively prevent this (weather it's by hindering solar or by hugely subventionieren oil/coal/gas).
So the situation is both better and worse then the statistics above make it look. Better as you could move production away from non amicable countries and boycott their products and "convince" some of them by giving them a economical feasible means to improve. Worse because we know this won't happen and it means its not just "their fault" but quite often indirectly partially our fault, too.
Also lets be realistic thanks to corruption, short term thinking(e.g. next election) and sometimes plain stupidity many countries which try to get away from oil/coal/gas have done such horrible bad decisions that they not only completely fucked avoiding climate change but also have put their economy in a thought spot. When then is taken out of context and used by people like Trump as an example why fighting climate change is supposedly a scam.