The first really bad effects of climate change are going to hit Africa, south America, and south east Asia the hardest. Famines, droughts, the works. That’s why people say that. Don’t worry though, it won’t be long after that before the west deals with it just the same.

edit: A graph!

This is severe food insecurity at 2c, relative to current insecurity. Obviously at 3c and beyond it will get worse, and in more areas. But at 2c, not so much famine in the west. paper for anyone who wants to read it. This is from figure 2.