Sounds like you have some wonky ideas about what “atheism” means.
Well, no. A person who believes in a god that is everywhere believes in a god and therefore a theist and not an atheist.
Agnosticism is about a separate but related question. It’s not some sort of midpoint between theism and atheism.
And yet you still haven’t clearly said how you think they’re different.
I didn't say anything about what atheism means at all did I?
But if you need a definition then an atheist is someone who lacks a belief in deity (any deity, any kind of deity). Right?
OK - so if I reject that position and say, well I'm not sure - there might be a god of some kind, I just don't know...does that make me a theist? Of course it doesn't. So the suggestion that rejecting atheism is the same as accepting theism is wrong.
And if I make the even stronger statement that I don't think it is possible to be sure whether or not some kind of deity exists, I am still not a theist and I am not an atheist either. Right? In fact that would really be an agnostic position - the idea that it is not possible to be sure one way or the other. I agree this is not a half-way house between atheism and theism - I never suggested it was - but it certainly proves that one could reject atheism and still not be a theist. Right?
And I could be a humanist who simply couldn't care less whether or not a god exists because either way, human destiny is in our own hands. I am neither a theist nor an atheist - I just don't think arguing about the existence or non-existence of god is worth the effort. Right?
So there are at least a handful of ways in which one could reject atheism and not accept theism - and that's assuming that by theism we mean belief in any kind of deity.
Then there are numerous ways of believing in a God that are not "theism" in the traditional sense of a personal, intervening, miracle-working, prayer-answering creator and redeemer of iniquitous mankind...
I could be a deist, a pantheist, a panentheist...etc. etc...none of these subscribe to a traditional theistic sky-daddy kind of deity and scientific or naturalistic pantheists reject the idea of "God" as an entity altogether - they just believe that the universe itself is worthy of awe and respect (if not veneration and almost certainly not worship).
You can polarize the spectrum of beliefs and oppose them all by imputing a false similitude to all of them based on the least credible parts of one if you like - if it makes you feel better. But ideas that have exercised the imaginations of our ancestors for longer than we have been a species deserve more attention and respect than that in my opinion - even if we do know that they are wrong.