Yes.
I think Ido is an example of how people don't see the intelligence in kids who are non-verbal and dyspraxic, until they learn to communicate in writing - and even then there are some who won't believe it is the child's own thoughts, especially if they need the guiding hand of a parent or carer.
It's an important book in that way - allowing us to hear a first-hand account from someone who's never before had a voice.