The threads aren't here to convince die-hard creationists; these threads serve other functions. First off, there is the definite possibility that the literally hundreds of lurkers on these threads might come away convinced that science really does know whereof it speaks. Secondly, these threads also show that not all Conservatives are scientifically-illiterate bohunks mired in the dark ages.
One of the nice things about JimRob's recent updates is that it gives some evidence for the existence of those lurkers. As I write this, this thread has 75 posts, but 756 page views. 750+ times someone has loaded this thread up to read, but only 10% of the time does that viewing result in a post. 90% of the time, someone's reading but not posting.
I could make an even better argument that evolutionists aren't true conservatives, since they have the whole hearted support of the MSM (see this article) and liberal academia.