There is simply no element of creationism in the game. All terminology and interface point to an (albeit inaccurate) model of "evolution". Guided evolution, panspermia, saltations, probably. Creationism, no.

On a tangent: Spore has specified organized religion as a viable route to planetary domination, on the same effectiveness level as economic and military take-overs. Elements of conversion and religious assimilation also comes into play in the space stage, somewhat. But even if I replace the word "Creationism" with the word "religion", your "think of the children!" sentiment is still...naive at best. One could equally ineffectively argue that the game promotes ruthless economic colonization, militaristic violence, wasteful exploitation of resources, intentional extinction of entire species.....