One way that could reduce population and consumption. There are better ways.

It's not necessarily a forgone conclusion, but I think human tendencies toward tribalism and intolerance of diversity will cause more catastrophic death than climate change, itself. More tolorance of diversity, including LGBTQ diversity is a better way forward. Areas of the world where there is a trend toward more fundamentalist religious values seem to have societies that are more warlike and deadly.

So far, climate change has been a gradual thing, which, in the long run, can increase the death rate as well, but tribalist tendencies are likely to take a much larger toll in the near future. The catostrophic consequences of climate change may be less evident in the short run than our own prejudices and warlike tendencies. Climate change is more like a slow boil, for now at least.

At the same time, there will likely be many parts of the world where life remains quite good.

That's my prediction at least. It's not a forgone conclusion, but a possible scenario. No one knows, for sure of course, what the future brings.