I feel truly sorry for those who really suffer from it. It is a shame that it has become the excuse du'jour for those who don't want to do some things.
Many universities give students who claim to have dyslexia time-and-a-half or double time on their exams. Some demand open book exams.
As an adult if I discover a child who needs help I am eager to give them the same tools I discovered to get through life. Its very easy to spot lazy people who are faking.
Its also very embarrassing to face the humiliation of intolerant people.