I think you're missing what I'm trying to get at. Currently the creation science argument is that "God did it" is somehow a valid scientific viewpoint, and they think their religious view is the only valid alternative. They sometimes have to do this before judges who are deciding whether certain education proposals have merit. If they had to simultaneously argue for the rejection of certain creationisms (polytheistic ones), there's no way their claim could be viewed as anything other than religious, and not just religious in general, but a specific religion. The state can't favor one religion over another, and so their position would be as legally untenable as it is scientifically untenable. The effort would die out as soon as they realized that getting creationism into the classroom also means that scientific Satanism and paganism get to go along for the ride.