If someone claims 2 but denies 3, they actually invalidate 2 also, they contradict themselves, because 2 inherently implies uncertainty:
"I don't absolutely believe there is a god"
Hmmm, so a 2, an atheist who has no belief, is actually an agnostic? No my friend, they just don't have a belief, which makes them an anti-believer (my 3, you messed with my numbers.)
Yet if they can't also say that they "don't absolutely believe there isn't a God" then they reveal that actually they DO absolutely believe there isn't a God
The quadruple negatives are doing my head in.... I'm going to bow out here because it doesn't make for fun reading.