This sort of thing has never, ever happened to me. Nobody has ever suggested that I hire a wingman of a different ethnicity or gender or anything similarly asinine either.
Hm - I have had people look past me to talk to my Indian co-workers when asking technical questions: they just assume the Indian guy is the technical one and the white guy is the business manager.
There are plenty of things that have never happened to me, despite it being possible/probable that they should. In 20 years I've never been called for Jury duty. It's never, ever happened to me. Does that mean I should disregard the experiences of people who have experienced jury duty?