Okay, Cofty, you are the wise man. You have a superior insight. I´m wrong as always. No problem. I´m used with people trying to tell me what I shall do/think/behave.
So when someone believes in something (for example the conviction of non existing God), that is not a belief. It´s no problem with me. If you say it´s not a belief, no problem. If someone is convinced that aliens visit (or not visit) us, that is not a belief either. A conviction and a belief have nothing in common. Can be so.....
But wait, here:
"Atheism - the doctrine or belief that there is no God"