Many ethnic Spaniards converted to Islaam and they were persecuted along with the Muslims with mainly North African ancestry after Ferdinand and Isabella happened. Muslim children were stolen and raised as Christians. At one point, 80% of Spain's population was comprised of Muslims (Berbers + converts from the indigenous population). And it's probably glorified because it was part of a golden age while much of the rest of the world was still in the dark ages.
"Zion Zohar, an American Jewish historian, confirms the Jewish appreciation of the Muslim arrival in Spain (711 CE) in this way,
“Thus, when Muslims crossed the straits of Gibraltar from North Africa in 711 CE and invaded the Iberian Peninsula, Jews welcomed them as liberators from Christian Persecution…Born during this era of Islamic rule, the famous Golden Age of Spanish Jewry (circa 900-1200) produced such luminaries as: statesman and diplomat Hasdai ibn Shaprut, vizier and army commander Shmuel ha-Nagid, poet-philosophers Solomon Ibn Gabriol and Judah Halevi, and at the apex of them all, Moses Ben Maimon, also known among the Spaniards as Maimonides.” [20]"
http://www.islam21c.com/islamic-thought/197-one-state-solution-a-historical-perspective/
There are other places where I can point out that Muslim leadership was preferred to others by the original inhabitants of whatever conquered lands.
Yeah, many Spaniards converted to Islam. True. That is true about the Amerindians in Mexico and all the mestizos produced too. Eh... Jesse Jackson and Al Sharpton like many black Democratic leaders are bible preaching Protestants and not priests of Voodoo.
I don't think it should be a surprise that Spaniards would convert to the leading and wealthiest power group. Pretty typical human trait.
Islam offered some benefits in other ways as well. Islam brought a solution to the violence and social problems throughout the Iberian region of that time. That Catholicism was inadequate to handle or address. Kind of like the Nation of Islam today offers a solution to the violence and social pathologies within Black-America in a time in which the Black Church (Protestant) has been incompetent and incapable of adequately addressing and solving.
Islam will offer solutions to America's and Europe's problems as whole as secular people provide utterly incompetent leadership, social pathologies explode, and secular leadership is up for the highest bidder with the best story to tell the masses.
But in terms of the "Dark Ages," for one, Western Europe in no way constituted most of planet earth. Secondly, the term itself is propaganda. The ancient Romans viewed most of the white world as barbarians for a reason (not that the Roman's with their gladiatorial events, infanticide, crucifixions, massive slaughtering of animals for human entertainment... weren't barbaric as well). My Germanic ancestors were still living as "Indians" when the Christian Gospel was brought to them. So, no, the ancient pagan Roman's had not turned the Germanic tribes into learned, cultured men sipping tea.
But yeah... it is true that after the pagan Germans crushed Rome and invaded, that what "light" Rome did bring Europe began to flicker out.
The Muslims acquired a lot of their "knowledge" from the Eastern and Oriental Christians. Particularly the Oriental Christians. And a lot of their "knowledge" from the Hindu Indians. That learning they translated into Arabic and then brought to the Christian West.
By the way... the "Golden Age" of the USA was arguably right after WWII during the 1950s to the late 1960s. Why would Black-Americans rebel during a "Golden Age" and one of material prosperity and scientific advancements that greatly surpassed the Golden Age of Moorish Spain?