Probably because there aren’t many Muslims around. What are the odds of finding a Muslim that is preaching about how you are wrong, in an average Americans life? I know of no Muslims that do that where I work, our friends work or where my wife works.
But you are right, they are not out there preaching, except to the prison populations. Unlike modern Christianity, they still spread their religion by sword, not by preaching. And they continue to subvert the laws of the land by asking for Sharia courts. Christian want the country to hold to the historical underpinnings of our form of jurisprudence. Which, I ask you, is more worthy of contempt?
Also, there are not that many Jewish people in the US, but conservative Jews seem to get their fair share of contempt from the press.