The video you linked even says it refers to WW1 Imperial Germany not Nazis. Trump's family faced discrimination in America for their German heritage back in day. This is a reach anyway, you have to squint to actually see it too.
People experienced discrimination for all sorts of things in those days, including being "white trash".
Much of what was said about German-Americans was also said about Jews. The Ashkenazim were probably more like German-Americans than any other ethnic group in culture. You know how it goes if you are a German-American: you will experience antisemitic bigotry at some point in your life. I had a persistent detractor on the Web who accused me of all the classic defamations of Jews. I chose to attack those defamations against Jews, and I found that he was attacking Jews in this supposed defense of Germans and German-Americans. Well, I have often confused Jews and German-Americans, and I fit a few Jewish stereotypes, including cultural and ethical values that I consider virtues and not vices. I finally hit him for attacking someone that he thought that he was protecting from harsh Jewish judgment. I have never had problems with Jews. Of course I have also made clear that I hate Nazis for doing bad things to innocent people, the definitive evil of Nazism.
I told him that if I had to choose between being a Jew and a Nazi I would convert to Judaism because I could keep more of my culture intact and abandon no morals. Too bad about pork and shellfish.