Passionate reactions about pronunciation must be a British thing. I really don't think Americans care very much unless the pronunciation is outright wrong, and probably not even then. I really can't imagine an American radio host receiving such complaints.

This is the country that gave the world "nucular" after all. (Sorry about that.)

That said, if any word in America can provoke a passionate pronunciation reaction, it's pecan:

https://www.ourstate.com/pecan-how-do-you-say-it/