Benefits? It forced ignorant people to learn how to read.
LOL
No it didn't.
The Qur'an is written very differently. It's not written in any specific poetic style or literary style or any common language style. It's very very different. Back in the day, the "ignorant" would simply be taught by their spiritual leaders. They didn't read the Qur'an for themselves and figure shit out on their own. They were spoon fed the contents of the Qur'an for a long, long, LONG time.
This is partly why there are sects of Islam. The dude who succeeded Mohammad in leadership was supposed to be this one guy, but ended up being this other guy. One group of people was happy that the Dude #2 became Mohammad's successor while another group were entirely outraged that Dude #1 didn't get the job. These two men taught the contents of the Qur'an differently, each to his own understanding. They had different points of view.
This is the foundation of the rift that created the Sunni and the Shia.
Literacy was often reserved for muslim society's elite or rich, much like learning to play music was often reserved for the rich or the nobles in european culture around the same time. Even then, you had to be male to be taught to read and write which is how it remains in many Sunni-controlled regions today.
Literacy is STILL a massive problem in the middle east and much of Africa. The Qur'an and Islam is doing NOTHING to change that.
Yes, it's true that several prominent players in the world of science and math were Muslim, but those are the cream of the crop of the rare few who were allowed to become that educated. I mean, shit. The muslim conquest of Egypt in the 600's is one of the likely causes for the destruction of the ancient world's greatest treasure of knowledge, the Library of Alexandria.
During Mohammad's reign of terror across southern Europe, one of his decrees was to burn book repositories because of 2 reasons: 1) if the book disagrees with what the Qur'an teaches, then it is full of lies and must be destroyed, or 2) if the book agrees with what the Qur'an teaches, burn it anyway because we already have the Qur'an to read directly from.