There is no doult there are some people who find reading hard, some people find riding a bike hard and some people are useless at sport.
I think that the problem is what and how we percieve intelligence. The fact that a lot of IQ tests rely on verbal skills is unfair on dyspraxic, autisic or even deaf children.
Tests based on spatical awareness are unfair on children with poor eyesight.
Intelligence has many types. Just because someone struggles to get reading doesn't mean they are useless at everything else.
Giving someone the label of dyslexic does not make someone able to read. For many mildly dyslexic people the cost of the educational pcycologists report would pay for a course of one to one tuition needed to help them learn to read.
Prehaps we need to think how we define the term dyslexia and what we do with children who we label as dyslexic. Also how we best target a limited amount of money to help childen with special needs.