I don't think that humans will go extinct from climate change, but it will drastically change where we can comfortably live and will uproot our ability to make meaningful cultural and scientific progress.
In your comment above you mention:
> e.g. population aging, institutional scar tissue, dysgenics, nuclear proliferation, pandemic risks, AI itself
These are all intertwined with each other and with climate change. People are less likely to have kids if they don't think those kids will have a comfortable future. Nuclear war is more likely if countries are competing for less and less resources as we deplete the planet and need to increase food production. Habitat loss from deforestation leads to animals comingling where they normally wouldn't, leading to increased risk of disease spillover into humans.
You claim that somebody saying "climate change is one of the most difficult and worst problems of our time" is a take you're surprised to see here on HN, but I'm more surprised that you don't list it in what you consider important problems.
In your comment above you mention: > e.g. population aging, institutional scar tissue, dysgenics, nuclear proliferation, pandemic risks, AI itself
These are all intertwined with each other and with climate change. People are less likely to have kids if they don't think those kids will have a comfortable future. Nuclear war is more likely if countries are competing for less and less resources as we deplete the planet and need to increase food production. Habitat loss from deforestation leads to animals comingling where they normally wouldn't, leading to increased risk of disease spillover into humans.
You claim that somebody saying "climate change is one of the most difficult and worst problems of our time" is a take you're surprised to see here on HN, but I'm more surprised that you don't list it in what you consider important problems.