You can debunk those quotes from that book all you want. Fine.
Rush has hundreds of other quotes that are racially insensitive or infer a definite point of view.
Look how he constantly changes his voice inflection when he tries to talk live various “black people.”

His constant insinuations and pointing what he considers negative and then connects it to African-Americans or other minorities. You can find any of these quotes documented, “Black kids cheering on a bus”
“halfrican-American” “Obama disowning his white half” “Injuns” these comments are almost daily.

For anyone who does not want to recognize this you are not being objective. You think NFL owners want that kind of controversy?
Rush was rejected by his own, the NFL owners because they cannot take a chance of losing or not being able to expand their fan base with his political rhetoric and stances with race-baiting being a big one.
These owners are no doubt conservative and mostly republican yet they wanted to distance themselves from Rush and his race-baiting.
It wasn’t Obama or liberals it was the NFL owners and commissioner.