The idea that eugenics aims at creating tall blonde blue-eyes is obvious enough. But both "Space Seed" and ST2 did their damnedest to portray the Augments as a bunch of individualistic leaders, not mindless followers; ST2 even had them make fun of the concept of uniform, by accessorizing their rags with Starfleet jackets and whatnot.
Not Hitler Jugend then, not by a long shot. Evil, ruthless supermen, yes. But not a well-organized movement of them. Religious cults probably hit closer to home for the audiences of both the 1980s and the 2010s, with their brainwashing of children and the two-level organizations of one Exalted Leader and lots of worthless followers.