It is very likely that your friend is absolutely no different from anyone else, but for the fact that they had a poor early experience of reading. A failed education system has found it more convenient to convince your friend that they have a neurological disorder, rather than admit to their culpability. Your friend should not have needed any clinical diagnosis to access proper teaching; We should be thoroughly ashamed of the continuing systematic failures that create such a situation.
If a person has a low aptitude for something, then they themselves will naturally tend away from it, and toward things at which they feel they can succeed. I liked programming initially because it fit with how I thought and what I liked to do, so I practiced it and became better. I don’t care that much about cars, so I don’t know a lot about them—just enough to do basic repairs once in a while. So it could very well be that the child has no learning disability and the educator is not at fault. We cannot know without hard data.