I don't see how you're disagreeing with me, the point I made was that Islam's about 14 centuries old and it's behaving about like 14th century Christianity did, nothing you cited disputes that. It's certainly true that Islam once had a golden age, and actually that is a factor in the present behaviour of its extremists, who think the golden age was lost because Allah turned his face away from them as a punishment for straying from the true path. They believe what they have to do is go back to 7th century practices and Allah will smile upon them again and restore the golden age.
The real fault, if it can be laid at any one person's door, belongs to Imam Hamid al-Ghazali, Islam's equivalent of Aquinas. Baghdad between the 9th and 12th centuries was the intellectual centre of the world, a community of Islamic, Christian, Jewish, and other scholars free to investigate and share ideas. That intellectual community generated significant advances in medicine, astronomy, mathematics, navigation, engineering, etc., as well as preserving much of the legacy of classical Greece and Rome. Al-Ghazali codified and standardized the practice of Islam, wrote it all down and, among other great leaps backward, branded mathematics as the work of the devil. Revelation replaced investigation as the primary source of knowledge, he cut that intellectual community off at the knees, and it never recovered. That's what religion with secular power does.
