[edit: it doesn't matter whether it's real vs fiction, it's a question of how you would react if you did something in the normal course of what you do, and then come to realize at it had a profoundly positive impact on someone else. Is not the romanticized part of the modern conception of a startup a blend of changing people's lives positively at skill via products that make the world better plus a dash of hopefully positioning yourself to there after only work on projects that capture your eye?
I will not dispute that the story here is cute and possibly fiction. But even if your day to do focus is building better tech in some domain, it's about building better tools for other people. ]