> I'm a dyslexic, and I was given extra attention is school that significantly helped me.

And I suspect that is probably true for most "dyslexics".

I have a pet suspicion that there is an actual dyslexia but that most diagnoses are simply a manifestation of 2 standard deviations of "everybody's brain is wired slightly differently and some things require more effort."

One of my relatives is really good at mathematical theoretical physics (probably better than I am, and I am no slouch), but doesn't read or write very well. I find it very difficult that someone who manipulates symbols that well has "dyslexia". More probably, he needed to devote more energy to reading but never did because he found it difficult.

Unfortunately, our current education system is not set up to handle any student who is outside one standard deviation of "normal" on any dimension.