TNC, yes, true. I think Kay was focusing on a certain type of U.S. conspiracism. Looking at the toc, he seems to avoid the anti-Jewish theories in the Muslim world (note that he works for the Foundation for Defense of Democracies, which describes itself at the end of one article as “a policy institute focusing on terrorism and political Islam”.)
I keep returning to this question: if the objects of a conspiracist mindset are not Jews-as-Jews, but are associated with Jews in the national imagination (e.g. are bankers, or Mossad), then how, if at all, might Kay’s recommendations for disrupting conspiracy beliefs (“a pound of cure, an ounce of prevention”) be helpful for disrupting antisemitic beliefs?