We can assume that this writer would have been a Connecticut Yankee, a strong opponent of the South and slavery.
Darwinism and eugenics, going back to the 19th century, were haunted by ideas of “replacement.”
It’s important to understand what the Alt-Right believes. They are not just an extreme offshoot of either the Right or the Left.
Given evolution’s racist baggage, you might think the theory’s proponents would be somewhat abashed to accuse the critics of Darwin of “white supremacy.”
There is a tendency to sanctify the medical profession, with the white coat serving as an icon of wisdom, compassion, and morality.