I kind off agree with him in the sense that when mobile phones evolved, they didn't stop being mobile phones, they became smart mobile phones. So all he is saying is there will be another evolution like this taking place, we just don't who will do it and when.
This might come with projection technology, gesture recognition and or things we haven't thought it yet. This Ted talk is a good example and think about how old this video is.
https://youtu.be/YrtANPtnhyg







