Texting and professionalism

What is the point of scolding a student for texting a message that looks like this: i'msorry i didn't see u in class today i am sick but i will turn in my assinement soon thank you. Seriously, I think some teachers get rather snooty in this situation when I would be pleased that the student communicated with me, given how many of them don't. An email reply is not the place to correct someone on the proper use of grammar and professionalism. Instead, I would turn this into a classroom activity -- and not use the student's actual email because this would shame the student unnecessarily. Have the students compose a fictitious text to their best friend saying how sick they are today, including their symptoms. Ask them how, in a text message, they would spell and punctuate it; don't make corrections but rather write what they would normally text on the board. Then tell the class that they must write the same information to their family doctor. Have them compose a formal letter explaining their illness and symptoms, using correct spelling and punctuation. Point out that in both cases the information is being communicated, but we must judge which situations are professional and require proper English. If you want, this would be the time to insist that they email you using proper English. It is unsporting to do so as a reply to their original effort at communication.