Thats why I write my code without any libraries or frameworks.

Sarcasm aside, you are correct but it’s better to learn things first. But after a while, those aliases and dotfiles are just shortcuts. I’ve had my dotfile repo with things I need for something like 8 years and hasn’t changed much beside vim plug-in updates and I could just whip up the same setup manually but it would take a half a day to get everything to how I prefer things. They just save time and sanity.