"We" as people in developed countries who have the luxury of having kids in high school with smartphone.
Let me rephrase that.
People in developed countries don't work the same way as a 100 years ago. (farming, manufacturing, etc.)
People in developed countries don't entertain the same way s a 100 years ago. (social media, TV, etc.)
Almost everything is different. So, why are we trying to teach the same way as a 100 years ago?