I don’t think anyone has argued against that point. The issue is whether random chemical changes in the DNA, influenced solely by whether organisms survive or not to procreate, is a sufficient explanation for the diversity and complexity of life, the actual reality of organisms as whole beings in themselves and especially our existence as rational beings rooted in eternity. Tacking on God to what is a materialistic concept may help make it more valid, but cannot fix the problem of it’s not addressing the lack of continuity in successive generations that is especially clear in our own existence, but is also present when we think of the total difference found between matter and simple one cell creatures, as well as between them and plants or animals. It does not explain the psychological let alone the spiritual. The physical is only one dimension of what are ultimately living forms of being rooted in and created by Existence itself - the Triune Godhead.
Congratulations, by the way.