Creationists get their britches tied in knots because they read fixety of species as a corollary of a literal reading of Genesis.
Dawkins? An eminent biologist who gave up science to become possibly the loudest and most odious of the recent spate of apologists for atheism. He was a bit too doctrinaire as a biologist, too, to my way of thinking, and argued vociferously that Gould’s critique of the praxis of evolutionary biology’s ‘just so stories’ was wrong (by which Gould meant the inistence on finding an adaptive purpose for every observed trait to explain it, when coincidences of adaptive traits could themselves produce other traits—e.g. sleep and consciousness are both adaptive, but dreaming might not have any adaptive function, being merely consciousness while sleeping). In this, his atheism, and misperception that classical Darwinism provided a proof of atheism, colored his scientific judgement.
In short he’s a fanatic who, like every fanatic, believes his view is superior and therefore he is superior. Instead of taking the “if you can’t beat them join them” route he’s gone whole hog into the “if you can’t join them beat them at their own game” game.