The prejudice is still there, but it's breaking down. You have writers like Michael Chabon and The Yiddish Policemen's Union. He's a writer who's determined to break down genre barriers. He's done amazing things. George R. R. Martin
English is an outrageous tangle of those derivations and other multifarious linguistic influences, from Yiddish to Shoshone, which has grown up around a gnarly core of chewy, clangorous yawps derived from ancestors who painted themselves blue to frighten their enemies. Roy Blount, Jr.