This is what Lewontin was referring to. The theist presupposes god, then demands that science put this presupposition on the same level as the things that science is able to observe and test.
No, it is not. Not only has your commitment to materialism caused unreasonable conclusions regarding science, it has also created selective illiteracy when reading the English language: He says: "materialism is absolute, for we cannot allow a Divine Foot in the door ".
Contrary to what you state, it is the materialist that is chained to his presupposition, at the expense of his rationality.
Creationist believe we must be rational, truthful & anchored in reason and logic. Why? because the believer has a duty and a longing to be like his father God, the giver of logic and truth. "God cannot deny himself".
The Materialist has no such moral imperative, and so can be as irrational and absurd as he or she likes in their interpretations without violating any tenet of materialism.
"we are forced by our a priori adherence to material causes to create an apparatus of investigation and a set of concepts that produce material explanations, no matter how counter-intuitive... and mystifying" ― Richard C. Lewontin Ph.d (Degrees from Harvard and Columbia)