This is called Dutch Disease and most often happens with natural resources, but also with natural stupidity.

In my case, I use several different types of machines: Personal Linux desktop, personal low end Linux laptop, remote servers where I have sudo, work Mac, shared remote work servers where I don’t have sudo. I want my setup to be basically the same everywhere so that my muscle memory works, but there are some things that also need to be a bit different for each. Hence, a dot files manager that lets me run one command to keep my environment consistent in all those different targets. I use chezmoi + git for it nowadays.

That makes the most sense. It was probably set up the day she got it as part of the onboarding process and then she never used it and forgot about doing something that took 30 seconds several years ago.