Sorry, I really don’t understand the question.
You say that the designer being a diety is an exclusive obsession of the detractors of ID, and does not affect it’s proponents. If that’s the case, why doesn’t the film present the theories of life being brought here from offworld as examples of Intelligent Design? The only people in the film who seem to present those theories as a possible explaination are presented as members of the established scientific community that trying to quash any discussion of ID. No one in the film who is presented as a proponent of ID suggests any possible identity for the designer other than God.