I wouldn't have thought of Nazism as a religion.
I don't think the argument that you can do this will pass muster in a court that is applying the law consistently.
I disagree. I think it can and will.
"Creed" can mean any set of strongly held beliefs. While we're on the topic of "religion" since when did the government have to require what you believed to be a "religion"? Can an atheist be fired because he has none?
I disagree. I think it can and will.
In a Liberal court that cares not for consistency of law or principle, you are probably right. In a court which applies established principles across the board, you are probably wrong.
In a California court, there is a good chance the man would lose such a lawsuit.