That has more to do with the insistence on biblical literalism than science. Conservatives tend to be from groups that insist the bible has no errors of any kind and that no alternate interpretation can possibly be right, liberal Christians tend to see it as a guide and subject to reinterpretation.
Though, on a second look, I don;'t think its meant to be propaganda, it propagates some conservative ideas about liberals, but it seems mostly tryig to paint both sides in a good light.