there are people with various problems such as dyslexia.
That's right. Asking someone with dyslexia to spell something corectly is like asking a blind person to look at something or a wheel chair user to take a walk with you. Dyslexia is a disability like many others. You have to alter your expectations of people to fight their abilities.
I've earned two university degrees and teach in the public school and I've never been a strong speller.
Commenting on a persons spelling is like commenting on someones disability. It's not right.
(Not spell checked, deal with it!)