The problem with the Farage is that he may have started out to make a cynical living out of being anti-Europe, but like most of his ilk, after a time of being surrounded by nodding dogs, all baying for more and agreeing with everything he says, they start to believe their own bullshit and feel empowered to spout even more.
Of course, they have the easiest audience, which is why they chose it in the first place. Most of the right-wingnuts in the US (Anne Coulter and the like) started on this path, and Haty Katie is own brand of this phenomenon. That it makes them easy money, of course, helps.