My point was that there are things that are not worth arguing against as there is a prima facie against them. So those arguing for those positions are either ignorant of the prima facie case or are trying to deceive, sometimes themselves as well as you and me. If you want a more current example take Irans nuclear program, I have people try to tell me that Iran is working on a nuclear weapon, I used to point out that all 17 US intelligence agencies have said this is false, I have since stopped bothering and just avoid those people now.