This is why I try not to misuse the word Atheist. It gets enough misrepresentation from both the willfully and genuinely ignorant.
Atheism = lack of belief in a God. There, someone has to restate it ever 3 or 4 pages, but that's what Atheism is. That can mean a rejection of God (God is not real) or a mere lack of belief (I'm not sure). Atheism has absolutely zero stance on anything other then this one issue.
To say Niel Degrasse Tyson is an 'advanced Atheist' because he has more to say on the matter is like saying chocolate milk is an 'advanced milk' because there's more then just milk in it.
Most of the time when someone misuses the word Atheist, they really mean Humanist, Naturalist, or just Skeptic.
Speaking of hammers...
I have dubbed him Hammer of God