The question about paying the costs of global heating is not "Can we pay" but "Who will pay".

The article does not mention all the ways global heating is killing people. For instance, it doesn't include the people killed, directly or indirectly, by the Syrian civil war and PISSI even though global heating was a major cause of that war.

It also doesn't mention the tropical diseases that are spreading north, or the people that lose their income and then die because they can't afford medical care.