Papers like the Guardian revile UKIP because of their politics and papers like the Mail and Telegraph subtly undermine them because at core their allegiance is the Conservatives and its an election year.
My problem with his views is they are very simplistic and assume Islam is some kind of unified theology. There are so many divisions of opinion between different branches of Islam, between cultures, countries and class. Different sections of Islam disagree with others probably more virulently than UKIP do.