This needs some Venn diagram and further research. Probably not more than a 1/5th of them say that, or a 1/5th of a 1/5th. It could be just the ones you're looking at. As a an apocalyptic survey question, it could be less than a 1/5th of a 1/5th of a 1/5th or so on. Not all "Truthers" speak English or live in the United States either. In Quebec, for example, I think this would be practically non-existent. It's obviously Judaizing. It could be Mossad's hourly wage internet-typing bot squads. Or it sounds like it could be some folks blind as bats out in California.