How do you know it is nonsense? Here’s an excerpt from an article: Study Suggests Adolf Hitler Had Jewish and African Ancestors
“Writing in the Flemish-language magazine Knack, Mulders reported that the relatives’ most dominant haplogroup, known as E1b1b, is rare in Western Europeans but common among North Africans, and particularly the Berber tribes of Morocco, Algeria, Libya and Tunisia. It is also one of the major founding lineages of the Jewish population, present in 18 to 20 percent of Ashkenazi Jews and 8.6 to 30 percent of Sephardic Jews. In other words, Hitler’s family tree may have included Jewish and African ancestors.”
I have no idea if it’s true but it doesn’t sound ridiculous. A lot of people have a lot of diverse ancestors in just the past few hundred years, and of course everyone does going back far enough.
Is there some reason this matters to you?