I don’t know about Culter, but I believe that Limbaugh is filled with satire. I know that a lot of what he says is intended as a sarcastic comment not to be taken literally. In turn, a lot of what he says is not meant as sarcasm, he is still very right wing.
Either way this is America. Like it or not they have a right to speak their minds. The listeners also have a right to listen. They have a right to be stupid.
I personally enjoy Rush Limbaugh’s satire. I don’t agree with everything he says, and I also don’t disagree with everything he says. He is an entertainer trying to get ratings talking about current events. He knows how to captivate audiences from many demographics.