Whether monastic materialism or idealism is correct would be an unfalsifiable claim within the framework of natural scientific method. (That method is designed to help us make predictions; interpreting experimental outcome for a statement of objective truth is a misapplication of scientific method.) An existing natural-scientific model can be referenced in a philosophical argument, but the argument remains a philosophical statement. A philosophical argument can still be debated on other merits—e.g., which alternative grants magical objective existence to more arbitrary entities, or such.