People who really understands the Quran reads it as a continuation of God revealing Himself to humanity. Even before Buddha, men contemplated their existence in relation to the Supreme. And many wrote their thoughts. Job was also such a man.
Just as Christianity has a great many ill informed, babbling their interpretation of what they read and supposedly claim to undersatnd, so also is the vast majority of muslims.
I have read commentaries by devout muslims whose words are similar to the scriptures. They are very few. Those men are mainly Middle Eastern Scholars, quiet and revered in the awe of God. Those men doan go about challenging the billions of muslims who doan know God. That is if God is Allah.
At the end of time, the Scriptures will accepted as God's words. Because what He says will happen is happening in real time.