This doesn't strike me as a problem.

Everyone makes their own productivity app because everyone has their own style of time/task/goal management. Do we not always say something along the lines of, "build something for which you're the first customer?"

This is the most common result of that stimulus.

I often encourage people who are just starting to program to make their own CLI productivity app that mirrors their existing GUI or paper productivity system. It gives them both the motivation to complete it and a reason to keep coming back to the command line after they're done. I wish that more introductory language and framework tutorials were structured around this.