My son was a YouTube viewer before he could talk. He is now 2 1/2, and every day he spends 20-30 minutes watching videos. Occasionally more (esp. when his parents are sick.) Sometimes he follows a video stream. Other times he asks us to put specific genres up for viewing.
He will unquestionably be able to type on the iPad long before he can actually write.
It is very much going to change the next generation.