...and the article has a direct response to your first part:

> He suggests that people will indeed do nasty things on a mass scale if they are convinced that it is for the greater good. It was not inherent nastiness that led to the Holocaust, Bregman suggests, but years of indoctrination.

For your last point about people in poverty, I would point out that the global poverty has gone down dramatically during capitalism's reign, and generally overall humanity has been toward helping poor countries and poor in their countries. Is there enough social protection for everyone? No. That does not invalidate the article's points. The fact that humans do not achieve perfect or near perfect does not mean we are not generally good.