Go back a few centuries ... and then a few more ... where did they go to learn sciences etc ... they gained power through knowledge gained from muslim lands!
The issue again was not of conservatism.
Islamic history is a stage on which two fundamentally opposed intellectual forces have been struggling for pre-eminence — a dynamic, scientific rationalism (Rationalists) pitted against a reactionary, obscurantist gnosticism (Traditionalists)....
The Mu'tazila (Rationalists) had a tremendous impact on the Muslim world ... The Abbasid Caliph Mamun (a Mu'tazila himself) greatly patronized them . The House of Wisdom (Arabic : Bayt al-Hikma)
was a library, translation institute and school established in Abbasid-era Baghdad, Iraq. It is considered to have been a major intellectual center during the Islamic Golden Age. The House of Wisdom was founded by Caliph Harun al-Rashid (reigned 786–809) and culminated under his son al-Ma'mun (reigned 813–833) who is credited with its formal institution ....
During the reign of al-Ma'mun, astronomical observatories were set up, and the House was an unrivaled center for the study of humanities and for science in medieval Islam, including mathematics, astronomy, medicine, alchemy and chemistry, zoology and geography and cartography. Drawing on Indian, Greek, and Persian texts, the scholars accumulated a great collection of world knowledge, and built on it through their own discoveries. By the middle of the ninth century, the House of Wisdom was the largest repository of books in the world
This house gave to the world people like Ibn e Haitham (the first true scientist), Mathematicians like Khawarzimi, Philosophers like Kindi, Physicists like Al Jazari, Physicians like Hunain, Astronomers like Sind Ibn e Ali and the list is very long ... Al Ma'mun, al Mu'tasim, and al Wathiq followed the sect of Mu'tazili, which supported mind-broadness and scientific inquiry, until the time of al-Mutawakkil who endorsed a more literal interpretation of the Qur'an and Hadith. The caliph was not interested in science and moved away from rationalism, seeing the spread of Greek philosophy as anti-Islamic .... Traditionalists had won ... Mutazila were branded heretics . They were persecuted, their books burnt ... A great rationalist movement in Islam had met its unfortunate end !!
Then came the Asharites who were neither traditionalists nor rationalists, they claimed to be the people who followed the middle path ... the greatest of them was Imam Ghazali; the second most influential Muslim in Islamic History, after prophet Muhammad pbuh (though one can argue that he was not an Asharite) .. And his greatest opponent was Ibn e Rushd; the Rationalist ...
Unlike traditionalists, Ghazali didn`t believe that Islam was anti science .. And unlike rationalists, he rejected all non Muslim philosophies (sciences) ...
Ghazali came to the conclusion that : “But to all of them (Philosophies/sciences), despite the multiplicity of their categories, cleaves the stigma of unbelief and godlessness.” (McCarthy,Freedom and Fulfillment 70)
The implications of this skepticism are quite far reaching when looking at the fundamentals of religious teachings in the context of the explosion of scientific knowledge in the modern era .
German orientalist Eduard Sachau rightly blamed the theology of Ash'ari and its biggest defender Ghazali specifically for the decline of Islamic science starting in the tenth century, stating that the two clerics were the only block to the Muslim world becoming a nation of "Galileos, Keplers and Newtons." ........
On the other hand, Ibn e Rushd , a prominent Maliki jurist and the chief opponent of Ghazali`s philosophy, could not inspire his fellow muslims much, but he had a great impact on Western European circles ... So much that he has been described as the "founding father of secular thought in Western Europe" ... And thanks to him, seeds of renaissance were sown in Europe.
So, whenever you talk about those great Muslim philosophers and scientists of the past who helped Europe come out of dark ages, please do remember that they weren't "conservatives" or traditionalists. They were great liberals and rationalists of their times who were branded heretics by the orthodox Muslims.