Atheism is a religious belief in the same way and for the same reason anti-racism is still racism.

As in: someone who actively and consciously denies gods et al thinks about them all the time and adjusts his/hers way of life according to this state of denial - the same way an anti-racist is fixated on race.

But as you point out: NOT bothering (or maybe it should be: NOT god-bothering?) with it is not belief.

May I suggest atheism as a term for the stereotypically agressive and insulting mental 14-year old qwith a liberal arts major ranting about religion as the copium of the masses, and /apatheism/ for the people who simply say: "You do you, man, just don''t force your beliefs on anyone, m'kay?"

If you see what I'm fishing for?