Kids will grow into the next generation of adults and having a screen you can’t touch will probably feel like an anachronism to them.

Certainly not. But they may be in the market for an entry level Mac laptop quite soon. I don't think Apple plans to limit touch screen to their top model for a long time. It is just how Apple likes to introduce new capabilities. Also, there might be technical reasons why they tied touch to the OLED display. So I do expect a MB Air with OLED and touch some time in the mid-term future.

Some of these "kids" have already entered the job market, and their companies buy them laptops.

People who were toddlers when the first iPad came out are now in college.