I don't really know how else to explain it. But when you see an article like "White people need to stop picking up litter: here's why that's racist" and it's written by someone named "Anna Scheissefrisser" and despite the fact that the name is a German compound noun, there's something off about it, and you look it up and sure enough, "Early life: Anna Scheissefrisser was born to an American Jewish family..."
And it's confirmed. Christian German names have a different feel than Jewish names, but why?
Good question that I also ponder because the Yiddish I've heard is Germanic. I'm studying the table of nations now and Jews/Judeans are supposed to come from Shem. These troublesome, meddling Jews who we are talking about are Ashkenazi. Ashkenaz was a descendant of Japheth, who is supposed to be the grandfather of the European peoples. Ashkenaz is also a cousin to Gomer, father of the Germans and Celts. So they're not even Shem-ites. Who are these people? Alas, finding this information is difficult because "~were all one race, the human race~"