The word "Darwinism" was coined to described a political movement and by an uber-Darwinist in fact.
...and I agree that there exist people, who use (or rather abuse) evolutionary biology to promote atheism (e.g. Richard Dawkins). But as far as I know Richard Dawkins does not post here on FR. The word “Darwinist”, uttered as a politically-charged expletive, is used to brand as godless commies those, who dare to debunk ‘creation science’ or protest the ‘I am a better Christian than you’ attitude of some sectarians.