Your question in the post is about 4billion dead people. Since there are no 4billion living in the usa i conclude that they would be from all over earth. And then you link a poll where 517 people (or bots?) voted if the golden years of america (i assume they mean the usa) are over. How is your post and this poll related?

People have a vastly different ecological footprints. Overrich people and some companies (especially oil companies) have the highest. You don’t need to kill people to make the earth habitable for all humans. Instead we need to stop the rich from their greed and divide the recources better. There are enough recources on earth if they would be used wisely.

Why not? In my opinion it’s doing an excellent job at showing the speed difference between the slow preindustrial climate changes and the sharp acceleration of the human made postindustrial climate change