What a cr@ppy article.
That said, Darwin would have been appalled at the application of evolution theory to human society. "Social Darwinism" is no Darwinism at all. HE opposed the idea the use of his idea for eugenics.
What's more, the doctrines that came to be called "Social Darwinism" were developed by Herbert Spencer years before Spencer knew anything of Darwin's ideas about evolution. Spencer claimed that he derived his "universal principle of evolution" (which Spencer most definitely did think applicable to society) from the laws of thermodynamics.
No Lord Kelvin, no Hitler!