You could have found other examples than supporters of eugenics and nazi sympathizers to argue that "genius is rarely universal". Instead you make hair-raising

You could have found other examples than supporters of eugenics and nazi sympathizers to argue that "genius is rarely universal". Instead you make hair-raising comparisons and close by writing: "I don't think Jason Fried, DHH, and co. are monsters, but". This is a low form of an ad-hominem attack.