You are misinterpreting the meaning of atheism. Atheism isn’t having a negative belief; it’s having no (null) belief.
You are misunderstanding what I said. I wasn't talking about a negative belief; I was talking about a negative definition.
Lack of belief isn’t a replacement for belief; it’s the default position before a belief is chosen.
Let's try that assertion with substitution.
Lack of {belief} isn’t a replacement for {belief}; it’s the default position before a {belief} is chosen.
Lack of {X} isn’t a replacement for {X}; it’s the default position before an {X} is chosen.
Lack of {a polar bear in my living room} isn't a replacement for {a polar bear in my living room}; it’s the default position before {a polar bear in my living room} is chosen.
Okay, it is clear that the assertion is not a general one. Let's try it with simplification by removing the unnecessary, negative sub-assertion:
Lack of {belief}
isn’t a replacement for {belief}; it’s is the default position before a {belief} is chosen.
Once you choose a belief, you have one and a lack is not having. So, this statement actually seems to be a comparison of possession.
Lack ofNot having a {belief} is the default position before having a {belief}
is chosen.
Not having a {belief} is the default position before having a {belief}.
Let's try that again with substitution:
Not having a {a polar bear in my living room} is the default position before having a {a polar bear in my living room}.
With this, you can see that the symmetry of the statement asserts two things: that lack is always first and that having cannot be changed. Your assertion is only valid if you can prove both of these. Or...perhaps you need to alter your assertion.
The definition between theism and atheism is "has belief" and "has no belief". The number and variety of religions and gods to believe in is irrelevant.
Okay, let's try that:
John believes that rocks have souls but people don't.
David believes that higher deities survive by consuming human souls.
Fred believes that souls exist before birth but cease to exist when people die.
Bill believes that he receives revelations from his cat.
Frank believes that he can reach a higher state of consciousness by eating marshmallows.
Which is an atheist and which is not?
“A” collects stamps, “B” doesn’t collect stamps. “A” has chosen to collect stamps, “B” has not chosen to collect stamps. “B” doesn’t necessarily have to have chosen not to collect stamps because not collecting stamps is “B’s” (and "A's") default position.
Or more like this:
“A” collects a particular subset of stamps.
“B” doesn’t collect stamps but does collect corn husk dolls.
“A” has chosen to collect this particular subset of stamps. He may or may not have known about other collectibles or other stamps and may or may not have chosen to find out more about other collectibles or other stamps or may actually have wanted to collect other stamps but may have chosen not to because of a particular collecting group that he is active in or because of a lack of time or money or a lack of particular expertise in another subset of stamps or collectibles.
“B” has not chosen to collect stamps.
“B” doesn’t necessarily have to have chosen not to collect stamps but could actually have reasons that overlap heavily with "A".