This is so incorrect it's baffling lol. Communism came way before Nazis did, and if you actually know what the natsoc philosophy is, you would see how anticommunist and anti-marxist it is. That doesn't mean they're pro freedom either, but they are two wholly different ideologies. The nazis would be gassing our liberals.

Also, eugenics actually is biologically sound as things like intelligence and behavior are mostly genetic. However, there is no way to act on it without mass death, which is where it falls apart.