However the proper term for somebody without either a belief there is a God or a belief there is not a God is "agnostic". If we used the word "atheist" as another word meaning this, we would lose having a word for somebody who believed there is no God.
But why does it matter? Why do Atheists want the term atheist to include agnosticism? The reason is because Atheism is so damn hard to defend intellectually, and yet if they call themselves "agnostic" then openly mocking religion as stupid is harder for them to justify. So they need to equivocate on the term Atheist to mean either agnostic or what it really means, according to their current purpose.
agnostic 1 : of or relating to the belief that the existence of any ultimate reality (as God) is unknown and prob. unknowable ... syn see ATHEIST
so ... ultimate reality ... unknowable . That's my takeaway.
>> The reason is because Atheism is so damn hard to defend intellectually,
Atheists are idiots.