You are clear-eyed in your analysis. There is simply no way the human race will cooperate in some global act of attrition to prevent climate catastrophe. At best some small cooperatives will coalesce in scattered places to attempt survival in a radically altered biosphere that will be increasingly hostile to human life. The impacts of 2023 are just a taste of a rapidly accelerating disaster that will only get more intense and violent. The timeline is short before our complex and interconnected global civilization begins to collapse. The next 10 years will be telling.