That's easy, deism considers God to be a watchmaker who created the universe and let it run on it's own ever since. Darwinism denies God was involved with even the origin of life, the universe or man is exclusively naturalistic:
the probability of all change in the organic, as well as in the inorganic world, being the result of law, and not of miraculous interposition. (Darwin, On the Origin of Species)
Thus, deism is only one step removed from Atheistic materialism. As a matter of fact I accept evolution and since your obviously have an excellent education you should have no problem defining the term, 'evolution', in terms of adaptive evolutionary biology. What you are calling evolution is actually two things, it's an a priori assumption of universal common descent going all the way back to and including the Big Bang and the change of alleles (traits) in populations over time. I believe in evolution after creation, evolution is a living theory, it happens after life starts. What we are really debating is whether the naturalistic assumptions of Darwinism are comparable with anything remotely theistic. Obviously I think not.
It's poetic prose as a matter of fact, it is nevertheless, an historical narrative with no hint of figurative language anywhere in the text. You believe in God, I assume the God of the Bible, further I assume you believe in the God of redemptive history who raised Christ from the dead. So, did God speak to Moses and the children of Israel from the foot of Sinai to the shores of the Jordan river? Now if you think the Old Testament is just mythology or fanciful poetry you have a very serious problem, the God of the Bible is a God of miracles and not subject to the naturalistic assumptions of secular scientist or empirical testing.
Yes Darwinism is atheistic materialism, there is no real question about that. God gets no credit for anything in creation, he doesn't even get honorable mention as Designer. The Scriptures don't tell us that modern scientists have a right to reject God in their understanding, the Apostle Paul tells us that they are without excuse:
For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who hold the truth in unrighteousness; Because that which may be known of God is manifest in them; for God hath showed it unto them. For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse: Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened. (Romans 1:18-20)
You are confusing political and social rhetoric with the Gospel message. You are right about one thing though, it is definitely an act of free will but it's not a natural right to reject the divine attributes and eternal nature of God, it's sin.
Your equivocating adaptive evolution with Darwinian naturalistic assumptions. That's the false dilemma theistic evolutionists love to pose. Let me share a little something with you, maybe it will give you a little perspective on where I'm coming from. The Ark touches down on Ararat 4000 years ago and from that barge we get all the diversity of life for birds, reptiles and man on a global scale at an accelerated rate. There is nothing like that in creation except adaptive evolution so why don't you give some thought to defining your terms starting with 'evolution' and 'creation'. Then we can talk some more.
Grace and peace,
Mark