But nobody is arguing against such beliefs (much). Only that they aren't based on science and shouldn't be taught in a science class.
Do you think Arthur C. Clark's 2001 a space Odyssey is a worthy subject to be discussed in a science class? The idea that a monolith acting in a Deus Ex Machina fashion acted on a select group of proto human species? Some ID types argue for ET intervention and or seeding of life on the planet, though I doubt Clarke would have had anything to do with them.
Or is 2001 more a discussion for philosophy class? Let's say 2001 is a good subject for discussion in science class...then what is so different about 2001 as opposed to a little discussion of the possible divine guidance where the origin of species is concerned?