Standard Arabic is similar to Latin in Medieval Europe - it is a second language that is used for formal education and communication, but that no one speaks as a native language. All the Arabic languages that people speak as first languages are much more analytic.
It's a similar phenomenon to Latin, where the formal written Latin used in Europe preserved things like case endings and flexible word order, while the Vulgates that later became the Romance Languages dropped a lot of that and started relying much more heavily on word order.
It's a similar phenomenon to Latin, where the formal written Latin used in Europe preserved things like case endings and flexible word order, while the Vulgates that later became the Romance Languages dropped a lot of that and started relying much more heavily on word order.