And I can find dozens of instances in a totally non Jewish context. In the movie Animal House there is a scene where the character Flounder is rubbing his hands in glee and saying “oh boy, this is great.” It was a common gesture in a variety of contexts that had nothing to do with antisemitism. Does this football player have a history of antisemitism or just being an all round jerk?
Look at covers of “hip hop” albums. Rubbing hands is a very common gesture.