"Creationism" is a misleading word, really. It sounds as if it should be about what most people mean when they say they believe in God, and that the world is God's Creation, but it's not, it's about a sort of Sci-Fi idea about the world being assembled a few thousand years ago, complete with artificial fossils put there to fool people. it's rather like something out of the Hitchhikers Guide. And like the Hitchhiker's Guide it's quite entertaining, but strictly fiction.

What mainstream Christians, and others, mean when they talk about God as Creator is much more complicated, and since it isn't in any way in conflict with scientific beliefs about biological or stellar evolution, it's not really worth arguing about in this context. Well "creationists" would argue against it, but that's a different context. And not an argument I personally would have any interest in engaging in.