I think you are again missing the point that others are making about spelling, and its value in communication. Of course others can understand what is being said, despite jumbled words or letters left out, as you show in your example, that was not the point being made here. It was about using words correctly. As for spelling on its own, if there were two equally qualified people going for a job at a large corporation and one could spell correctly and the other was poor at spelling, you can be assured that the poor speller would not be given the job. Do you then think that the big corporation suffers from "some sort of disorder, like dyslexia or something", no, not at all, good spelling is the way of the world, you spell well, you get on better in the working world, compared to someone who does not.
Those who have any self esteem would want to improve themselves when ever possible and spelling would be one of those ways. For someone who has a problem spelling and is helped out by having another correct them, that should be see as help and it would be expected that would wish to improve themselves, and those people will advance. On the other hand, if a poor speller simply attacks someone helping them to be correct, then that person will, most probably, remain along the road side while other move forward. And in a social setting they will probably be blissfully unaware that others are silently judging them by the way they speak or write, as unfair that you may feel that may be. I think we can now put this one to bed.