The provided transcript doesn't detail how Nietzsche's philosophy was used by Nazism, only that it was used and that this use was largely due to the posthumous editing of his works by his sister and that Nietzsche himself repudiated antisemitism, a core tenet of Nazism. To answer your question fully, information beyond the transcript is needed.
This open class video discusses whether it's possible to separate an author's work from their personal life, particularly when the author holds controversial views. The discussion uses the examples of Heidegger and Nietzsche's association with Nazism.
Heidegger's Nazism: The video establishes Heidegger's active involvement with the Nazi party, including his role as Rector of Freiburg University and his implementation of Nazi policies. He never expressed remorse for his actions.
Nietzsche and Nazism: While Nietzsche's philosophy was used by the Nazis, the video argues against a direct connection, citing Nietzsche's rejection of antisemitism and the posthumous editing of his works by his sister.
Separating Author and Work: The core argument is that an author's personal beliefs or actions don't automatically invalidate their work. The video provides three arguments supporting this: a good idea can be defended by a bad person; a person's actions don't reflect all their beliefs; and a professional can act contrary to their personal beliefs.
Case-by-Case Analysis: The video concludes that determining whether an author's life affects their work requires a case-by-case analysis, emphasizing that reading an author doesn't equate to endorsing their views.