From the README of the linked repo:
"When I started learning Emacs, my dad gave me his .emacs file. (That's what we used back in ye olden days instead of .emacs.d/init.el and stuff.) I used it without modification for many years. Eventually I learned how to write my own functions and customizations. This package aims to give other users a similar experience. When someone comes to me and expresses their desire to learn Emacs, I can point them at this to help them get over the initial hump, but not coddle them so much that they're afraid or unable to change things to their liking."