If religion is suppose to be about enlightenment, why does it so often times get interpreted as the narrowing of perspective and inability to think beyond how people are told to think?
Religion is not "about enlightenment". Religion is about faith in unprovable dogmas.
The age of enlightenment is something that happened in the West, liberating the people from religious thought suppression. However, there are other religions which have never been faced with an age of enlightenment.