He could be teaching them philosophy or maths or literature or ethics. He's drawing a UI on a chalkboard by hand! What a world.
Aren't computer skills a prerequisite for office work everywhere now? So maybe that familiarity with computer UI will help students later.
Not at all, especially in places where paperwork is done on paper.
> So maybe that familiarity with computer UI will help students later.
90% of the students will not have need or opportunity to use that word processor before the UI will change completely.