That in most of these theories, along with the nakedly antisemitic ones like Holocaust denial, those based on unknown /unseen groups controlling the world economy or the media inevitably point the finger at Jewish people?
When people say 'oh i keep an open mind' or 'David Icke is right about some things' think they're being broad minded, but in reality they're buying into semi veiled anti semitism and age old myths about Jews and Judaism.