As a counterpoint, I really like that the whole puzzle is just a text file. It's simple, and as I mention in another comment, it reminds me of learning to program in my early days.

This may not have any other real purpose than to be a piece of art. Or perhaps it's aimed at a narrow demographic of kids who are already decent programmers. However, it's also entirely possible that others will create a whole ecosystem of "unofficial" tutorials and libraries/frameworks around it.