You are still conflating immaterial and imaginary. There is a major difference.
That isn’t something I would ordinarily conflate. My insight is better than a little bit. My vocabulary may be lacking, but my understanding is pretty much spot on. “Immaterial” is 3-pronged while “imaginary” is 2-pronged.
If something is real, then at the very least, there is something. That’s not the case with “imaginary.” It’s not as if there is something. So, when we purportedly speak of something, either there is something we’re speaking of or there isn’t. 2-pronged; one or the other. A dichotomy. The two categories are collectively exhaustive and there is no third option.
“Immaterial” on the other hand is 3-pronged. This is harder to grasp, and it’s harder to argue. Even dictionaries lack the precision to help us grasp the subtle distinction. I use the term in a technical manner.
While “material” is opposite of “not material” and two-pronged in either something is material or it isn’t (and thus not material), I argue that while “immaterial” implies “not material,” the converse is not true. Wtf, right?
The logic I use is no different than what’s used to show “unhappy” and “not happy” are not the same. “Invalid” implies “not valid” yet not the other way around. That which is false is not true, but that which is not true is not necessarily false. Those are just more examples.
If something exists, it’s real and thus not imaginary. “Immaterial” says more than “not material” says. “False” says more than “untrue” does. “Unhappy” is more revealing than “not happy.” “Invalid” is more insightful than “not valid.”
If you tell me that an argument is not valid, I have no idea whether we’re talking about a deductive argument or not, but if an argument is invalid, then it’s a deductive argument, as no inductive argument is invalid (in the same sense). If a sentence is not true, it may or may not be a sentence that expresses a proposition, but if a sentence is false, then the sentence does express a proposition. The pots in my kitchen are either happy or not happy, but to say they are unhappy is to speak of them while making a category error. They are not the kinds of things that can be happy or unhappy and thus not happy.
If God is not real, then God is imaginary. If God is imaginary, then God is not material.
However
If God is not real, then God is imaginary. If God is imaginary, then God is not immaterial.
To say God is immaterial is to say 1) God is real and 2) God is not material. You may have a hard time seeing number 1 as true, but to say of something that it’s material or immaterial is to say there is something. There is no something to be either material or immaterial when it’s imaginary (or not real).