Having troubled myself the past eight or so years with the substance of Spinoza’s metaphysics, psychology and ethics, I’m going to throw my two-cents in with you. I differ with your choice of terms describing Spinoza’s reality though. I don’t find a “core/system from which Reality emanates,” as far as I read. As far as I read, and I’ll make the analogy: as we don’t emanate our cells and organs, nor are they separate from us; neither would I say that Nature or God emanates us, as we are simply one of the modes of existence. Existence simply is and continually modifies itself. It is for us to understand existence. For us is the study, through maths and sciences, the laws at work in the ratios of movement and rest in which it operates. That’s what I get from books I and II of The Ethics. After that comes III—Mind, IV—Affects/emotions, and V—(for lack of a better word) Behavior.
It’s taken me this long to reach an intuition of this notion of God/Nature, the infinite, absolute, eternal totality. But I still wonder. And so, yes, I agree with you that “God is not personal, and not influential - Reality will never be modified or engaged by a personal God.”
I’m with you that “there is stuff we can’t know.” Spinoza cites that Thought and Extension are the only attributes through which we understand existence but that in God there are infinite attributes.
I came to my study of Spinoza when stumbling on his wonderful difference with Decartes: The mind is an idea of the body; the body is the object of the mind: they are one and the same. So, yes, no duality.
Spinoza protested that he wasn’t an atheist. Some critics found him an obsessive pan-theist. He troubled my early reading of his work with his focus on God, but once I came to a grasp (of sorts) of the whole of Existence, or Nature, of Substance as an intelligence, then I understood his deduction of it as divine. (Polish cyberneticist, philosopher, novelist, Stanislaw Lem in his novel Solaris presented the eponymous planet as an indecipherable brain/mind.) So I’m going to differ with you here too that God=Nature is too simple. As we earn from Occam’s Razor, the simplest is usually the best explanation.
Coincidentally, recently I too wondered about Einstein’s believing Spinoza’s God as his. One of the great difficulties I encountered in understanding Spinoza was his theory of parallelism especially as it applied to Thought and Existence. Spinoza deduces that, no, there is no duality of mind and body; but, that, simply (I hope) no body, no mind, simple. What struck me was Einstein’s conclusion on matter and energy. Just as for Spinoza the attributes of Thought (intellect) and Extension (things) are one and the same that continually modify as motion and rest alter. Einstein saw that Matter and Energy are conserved though continually modify as motion and rest alter.
So why don’t we more generally even universally accept Spinoza’s world/life view? Spinoza doesn’t argue toward any conclusion; Spinoza sets out Euclidian-like (geometrically) his grasp, understanding, vision of existence from premises made of a substance lacking nothing modifying itself through motion and rest. It is logically deduced. We as a species are not ready yet to give up our “Paleolithic emotions, medieval institutions and god-like technology” (E. O. Wilson). Furthermore, as Spinoza deduced and modern studies show, facts and truths don’t rouse people to change their ways unless it triggers an altering emotional response as well. In fact actual facts or truths (round earth, fossils older than 6K years) without that emotional power, likely arouse further entrenchment. On the basis of Alt-facts & Fake News.
Let me make this disclaimer: I’ve read and studied enough Spinoza to know that I may not know what I’m talking about. I started reading/studying him because his mind/body unity and monism made a sense I found exciting. But following his logic, as terrifically powerfully as it is, is terrifically difficult. And in my excitement I likely presume too much of my comprehension.
I don’t know what your references are but Eugene Marshall’s The Spiritual Automaton is a powerful if difficult source.
I thank you for your indugence.