Social Darwinism is at the very root of an impending economic collapse but it won't be the best or brightest who emerge unscathed on the other side!
Having waged war on the word "theory", the right wing likes to couple it with another word similarly victimized by right wing propaganda. That word is "conspiracy" ~ a perfectly good word, in fact, a legal term about which there is a venerable body of case law, thousands of SCOTUS decisions and some 400 years of common law.
Einstein has been confirmed no more times than Darwin; Newton is close enough for mundane applications or "government work" and Einstein will one day help us navigate the galaxy. Significantly, neither "theory" has been challenged in court —though both theories may very well be replaced one day by a "theory of everything", a TOE.
There is a political agenda and a constituency behind the campaign of attacks on Darwinism. This constituency supports Intelligent Design for the same reasons the great rail road robber barons found support in the work of Herbert Spencer. The continued economic superiority of an entire class depends upon the widespread public acceptance of religious and/or ideological views which justify the existence of 'superior status'. Hitler, likewise, found in pseudo-science and mythology much justification for his anti-semitic crusades, his campaign of genocides, his wars of naked aggression.
Every cowboy knows the truth of Darwin if he's never heard of him: "Never kill a slow roach; you just improve the breed!"As succinct a description of natural selection as I've ever heard. Likewise, every farmer who has bred for specific traits knows the truth of Darwin.
"Are there no workhouses? Are there no prisons...then let them die and decrease the surplus population." ~Scrooge, A Christmas Carol