Probably not, I'm only mild/moderate, but only happened a few years ago.
I would never put someone down for their English usage. We cannot know how much someone has struggled to get something down on paper. Maybe they are dyslexic or have other difficulties. (How can we know if someone wasn't bullied all through school due to dyslexia and feel absolutely awful about it!) Perhaps they have manual dexterity issues and prefer to type in a short, contracted manner. Maybe they are just choosing to express themselves in the way they personally choose. I feel people do have that right.
And when all's said and done: we can't all be good at everything can we! We all have our strengths and weaknesses, and we will all need eachother's help from time to time.