You really do keep restricting the terms "God" and "Divine" to a Theistic frame.
There are no non-theistic gods. That's what theism is... belief in God.
I know religious professionals who consider Theism folklore or a kind of "graven image," and assert that the "Divine" is not a being but a quality of communal encounter and engagement.
To me that's just humpty-dumptyism. It's redefining God to be something God never was.
If God is a "communal engagement" then it's equivalent to an idea, or a feeling, or perhaps a mass delusion. In that case, the experience is real, but nothing actually God-like is real.
It's kind of like re-defining phlogiston as the experience of seeing something burn -- which has no bearing on what phlogiston was actually believed to be before it was debunked.
I don't find this kind of God-talk meaningless. You may find it unnecessary, and that's OK because other religious traditions have their own language that doesn't have the Sky Daddy history, (For exampe, "The Buddha Nature.")
Perhaps in time we'll have a secular "spirituality" that doesn't depend on recycled, redefined relgious terminology.
The contemplative Asian sects have been at the redefining game longer than Westerners, that's all.
Personally, I'm not much interested in the question "Can we re-define 'God' in novel ways to refer to non-Godlike things which we already know exist, such as ideas or the universe, or to refer to utter philosophical abstractions that have no actual referent?"
That seems unimportant and trivial to me. However, the question of whether God actually exists... that's important.
What I meant to caution you about was the sweeping statement that all possible uses of the G-Word are nonsense, and that there is no possible use of "Divine" that isn't drivel.
I haven't said that, and wouldn't.
I'm not talking about all uses of these words -- such as calling Clapton a guitar god, for example, or saying that sleeping in til 8:00 and being served breakfast in bed is divine.
I'm not saying all definitions of the words, used in any sense whatsoever, are empty or nonsensical.
I'm talking about definitions of "God" or "gods", divine beings which theists actually believe in.
When we're talking about that, then yes, all definitions are either contrary to fact, or fall into some fatal error such as self-contradiction, lack of definition, emptiness, humpty-dumptyism, etc.