Mel Brooks was an entertainer, not a historian, and of course he was way off about the role of the Inquisition or the shape of the friars’ legs. Furthermore, Sephardic Jews don’t speak with a Yiddish accent and were much more cosmopolitan in their dress, even back then. It’s silliness, Mel Brooks’ specialty.
“of course he was way off about the role of the Inquisition”
Practically everybody is. Michener called it “the Black Legend,” this body of fake history created over centuries by English Protestants who were at war with Catholic Spain for most of those centuries.
Even today, anyone who needs a stick with which to beat the Catholic Church can reach into the bottomless back of Inquisition and Crusade fake history.