That's a rather warped definition of humanism. I don't think that rejection of the literal existence of all gods is necessary to be a humanist. Do you? If so, why?
I haven't defined humanism in what I said. I hold definition to much more rigour than is found in simple conversations. There is nothing controversial about humanism finding salvation in the mind as opposed to the god. Mankind does it in their civilization of the natural world, in their cultural and social traditions, and in their histories.
I shouldn't answer your second question, as it's a bit of a straw man. But to take it at face value, I don't think that either. Humanism isn't defined in terms of god, but at the expense of god.
As the Oxford dictionary says:
"A rationalist outlook or system of thought attaching prime importance to human rather than divine or supernatural matters."
Since I don't think that atheism is an ideology, I have no idea what you mean by "practicing atheism as an ideology."
Fair enough.
They're relevant because they're useful tests of how you the word is used. For instance, it seems to me that your "rejection" definition of atheism would imply that Richard Dawkins (who describes himself as a "6" or "6.9" on his scale where outright rejection of gods is a "7") would not be an atheist. Do you think that Richard Dawkins - described by some as the "Pope of New Atheism" - is an atheist? If yes, then you don't actually use the definition you say you do. If no, then you're using your own unique definition of atheism that doesn't match with how the word is used generally.
Okay - then do that. Please list off a few atheists whose beliefs are known well enough that we can explore them.
I don't define atheism in terms of rejection, or in terms of the theist as some do, only in terms of
belief in god. Where one (genuinely) believes in a thing, that thing is present for them, it is real and a part of the world (their worldview). Where one (genuinely) does not believe in a thing, it isn't real (it has been rejected) or is nowhere to be found in the world (this includes ignorance of the thing).
As I said, I don't know Dawkins and the others well. I've not read their literature, only random quotes here and there on the Internet. However, if someone were to address a world
sans god, that is atheism.
I wouldn't be comfortable discussing other people's beliefs. The only significant beliefs I could honestly address are mine. But we don't have to address individual's beliefs to address atheism: we are doing just fine talking about it, without talking about them.