Interesting. One of my very good friends was an F-15 fighter pilot for 6 years and is now a staff scientist with a PhD in physics who happens to be an agnostic.
Do you really think he is an idiot?
An agnostic is someone who claims to have no religion. This itself is a religious view, so yes.
One would have to have more faith in nothingness than most do in God to be a real agnostic.
I guess if he believes he is nothing then I guess he can be an agnostic and that is my definition of stupidity.