It's Not My Fault I Don't Believe in God, Since There's No Free Will
I wasn't aware that "Darwinian orthodoxy denies the reality of free will," but thank god those wise intelligent design (ID) creationists revealed that well-kept secret. A secret so well-kept, in fact, that apparently the Freemason-like secret Darwinian society must only give that information out to the Darwinist Grand Masters, people like Dawkins and Gould, since I wasn't aware of it. I guess I'm just a poor dupe of the the "evilutionists."
Oh, wait. It isn't scientists, by and large, who claim that the theory of evolution is incompatible with free will. Theists are the ones who generally make this claim, based not on any evidence, but on philosophical arguments (or, perhaps, sophistry). Scientists, favoring making judgments based on evidence rather than faith (read: wild-assed guess), have debated the issue of whether humans and other organisms have free will, but have, by and large, held off on drawing conclusions until more convincing evidence was obtained.
The study the ID creationists cite shows evidence that free will may, indeed, exist in fruit flies, and thus possibly in other organisms. This is in no way in conflict with the theory of evolution. And, if it were, scientists would have to rethink the theory in accord with the new evidence, not abandon the theory entirely, as evolution is a robust theory that does not hinge on any one piece of data. The results of this study certainly give no support to intelligent design creationism.
Further, as I have argued before, free will is, in my opinion, incompatible with the Judeo-Christian-Islamic idea of God. In a material universe, things can be undetermined and random, since no one is determining what happens. But in a universe whose existence is contigent, from moment to moment, on an omniscient and omnipotent God who exists outside of time and both knows and determines the state of each molecule and particle in existence, and sets all the factors that could affect the behavior of creatures living in that universe, including the personalities, abilities, and propensities of every living being, nothing can happen that is against God's will. As such, everything that happens is God's will and only God's will, because His will cannot be abrogated, and so there can be no free will, as all beings living in such a universe must always do as God wills and can never do otherwise. While theists like to argue that we can, in fact, do things that are not what God wishes us to do, that just pushes things back one step and postulates a God that has dissociative identity disorder (multiple personalities), as we can only do something God does not wish us to do if God wishes us to, so God would have to both wish and not wish us to take that action. Of course, since nothing can happen that an omnipotent being does not wish to happen -- as being all-powerful necessarily entails the power to prevent anything one does not wish to happen from happening -- this is logically impossible. As such, either there is no omnipotent God or there is no free will. Both cannot exist.
Trumpeting evidence of the existence of free will does not actually help the ID creationists at all, though they don't realize it. Because a material, non-supernatural universe is consistent with free will or lack thereof, but the Christian God who is the unnamed "designer" of intelligent design theory isn't.