The special teaching directed at sufferers of Dyslexia instructs us on how to compensate for our problem(s). There is nothing wrong with this because it is necessary to be able to read and write in our modern culture.

But surely the special teaching is not actually curing the underlying physical problem(s) in the way the brain operates?

The truth is that if you are truly Dyslexic that is the way you will always be but there are many different and varied techniques for overcoming Dyslexia see Hints and Tips. There are even some advantages to being Dyslexic! For instance many Dyslexic people have great visual imaginations and are very creative.