So you agree with Derbyshire's point that the film is a Blood Libel against one of the foudations (science) of Western Civilization.
(Period, not questionmark; no other conclusion is logically possible.)
Science is open inquiry, or it is not science.It is not strictly necessary, I admit, for there to be Darwinism in order for a Holocaust to exist. It could exist with any belief system which rejects love as a foundational principle. It might be possible with Islam, or with whatever Ghengis Khan's belief system was.
But Darwinism is anticreationism, and anticreationism is antiChristian and anti jewish, and it historically was associated with the holocaust.