He's making a specific point regarding the relative importance of our senses. On the surface level, vision seems to play a far more important role in human life

He's making a specific point regarding the relative importance of our senses. On the surface level, vision seems to play a far more important role in human life than tactile sensation. Losing your sight (the sense screens use) results in a normal person who has to make a few adjustments to accomodate their blindness. Losing your sense of touch (the sense that touchscreens can't use) is paradoxically far more debilitating.