The linked article isn't about "hero altruism" as described in your links. It's about people who put the welfare of strangers above their own. For example by co

The linked article isn't about "hero altruism" as described in your links. It's about people who put the welfare of strangers above their own. For example by contributing 50+% of their income to charities, forgoing children in order to pursue career and donate more, and so forth.