John McWhorter argues that “brevity, improvisation and in-the-moment quality of e-mails and texts are those grand old defining qualities of spoken language.”
A sense that e-mail and texting are “poor writing” is analogous, then, to one that the Rolling Stones produce “bad music” because they don’t use violas. Note that one cannot speak capital letters or punctuation. If we accept e-mail and texting as a new way of talking, then their casualness with matters of case and commas is not only expected but unexceptionable.