People are asking who believes this and I can tell you: my college students. Every semester I talk about researching and when I ask them how they can tell if a web site is credible at least one will say if it is a .org or .edu.
Then I show them http://www.dhmo.org/ and a .edu hosted anti-science web site from a religious university to prove it isn't true. Then on the test they still say you can tell if a site is credible because it is a .org or .edu...