When Muslims created Islam, they were, and still are, parasitical on Judaism and Christianity.
When Muslims did philosophy, science, etc. they were parasitical on the Greeks and Romans.
Even that short "Islamic golden age" was shut down - circa the 13th century - when the Sunni hegemony closed down all critical thought in Islam. It's been downhill ever since.
That "golden age" occurred IN SPITE of Islam - not BECAUSE OF IT.
Actually, Islam was fossilised from the beginning. The Koran and Muhammad demanded its fossilization. As I said, the "golden age" occurred IN SPITE of Islam, not BECAUSE OF IT. Nothing that was great in that tradition, in philosophy and science, owed ANYTHING to the Koran, the hadiths, or the life of Muhammad.