There are game theory-based frameworks of altruism which contribute to this idea by demonstrating that it can maximize the survivability of a community if agents employ altruism, giving some theoretical insight into how evolutionary pressure could lead to it.

It’s no fault of Darwin’s, but I think society and the academic community still have much “unlearning” to do regarding evolution and “survival of the fittest.” We already (modern backsliding notwithstanding) unlearned eugenics and “scientific” racism, but we have a long way yet to go.

Kropotkin is underappreciated!