Not just on this forum as have seen it on other forums. Someone will say "that person is thick" and another person will say "maybe they're dyslexic". I have just seen someone comment on another forum "is it so hard to understand me? You must be dyslexic". On the Joey Essex thread on mumsnet, Joey is accused of being thick but someone has said he could be dyslexic! It's as if the two could be mistaken for one another.
As a dyslexic person, it doesn't give me much hope. One of the most painful thing for a dyslexic person is the thought that others think they're of low intelligence. Totally untrue.