There isn't only one way to interpret the Quran. Just because you disagree with someone's literary analysis does not make it wrong. For the purposes of this thread, the Quran is not non-fiction and is open to literary analysis as is an other work which is discussed on this forum. My "motive" is to take the negative position of the question which is posed in the OP.
There is no requirement for me unconditional sing the praises of any work of literature and I intend to critically analyze the Quran from a variety of perspectives, as I would with any other piece of literature.