He says:
Communication, too, is a basic skill, with reading and writing merely the best methods of the moment. Now both reading and writing are both very useful methods, which, to be clear, I think we need to teach until better ways emerge for getting the same information. But once all books are recorded, the Web reads itself, and every child and adult has a text scanner in his or her cell phone that can read any printed text aloud, should we still spend all those years teaching our kids phonics?
Writing is merely a method for recording thoughts. Not long ago neat cursive penmanship was the best method we had for this, because it was faster than printing and universally legible. Now we have better methods, such as phones, recording machines, IM, and keyboarding. As our kids all get their own phones and laptops, do we really need to teach them the old ways?
I think he has some great points to make which are worth having a look at.