Someone else already addressed your second point, so I will give my two cents on the first one. I am perfectly aware of all this and I don't want to underestim

Someone else already addressed your second point, so I will give my two cents on the first one. I am perfectly aware of all this and I don't want to underestimate the importance of Islam in the Middle Ages. This was basically school education before we had our modern systems in place. In Europe all universities were innately Christian, in Western Asia and Northern Africa all madrassas were equally so Muslim in nature, so deep knowledge of the respective holy scriptures was of utmost importance there. However, we live in a globalised world nowadays and religion, save for religious studies, has no place in science. You may need to work with Christians, Jews, Muslims from the other side of the Sunni-Shi'a split, Buddhists, Taoists, Hindus, agnostics, or even outright atheists. All of them may be great specialists in their fields and you shouldn't dismiss potential collaboration with any based on prejudice. If you are a true believer, you should know that we are no ones to judge others since the power for this lies solely in the hands of God. If you are not, this is irrelevant for you altogether - just try to live a decent life and improve your community through hard work.