I had to read this thread because I too am a stickler for grammar and spelling. After reading through the posts, I have come to the conclusion that I would be more irritated at improper grammar than I would be about misspelled words. When working as a nurse or anyone that has to chart for others to read, it should look professional and it is part of the profession; to be clear and concise. Our instructor reminded us that at any time, your chart can be used in court cases and you certainly would not want your grammar to be an issue. As someone stated earlier, I would fall over dead to see "boi, lol, cuz" or any other type of texting style chat on a chart! Even though I would love to write "lol" after something funny, I would recognize it is not the place to use that type of abbreviation. I do not think doctors should be excused from proper spelling and grammar.
I think it is one thing to misspell a word here or there. But to constantly have misspelled words and improper grammar all of the time you have to admit, makes a person look unprofessional. Especially if the mistakes are on elementary words/grammar and not something like hippopottomonstrosesquippedali phobia