It is not only OK in the English language, but sometimes it is even appropriate for us to type/write as we would speak in an unformal setting such as these forums. Just because one doesn't use proper spelling or punctuation doesn't make them illiterate, it makes them (at most) a bad typist.
So enough of that. After 30 years (or however many) of putting up with turds in the schools, I'm sure the man deserves (at least) a break, and (at most) our respect....