There’s a lot of reasons why you might want to develop your own program to solve a need. Usability, privacy concerns, not wanting to vet someone else’s code, or just practice are all valid.

Looks like they have a tiling window manager running the ‘stat’ command on a bunch of kernel files on the left, then a bunch of smaller window tiles having random stuff like garbled text, a resource monitor, and gnucharmap?

This one hurts.