edit:
I've updated & expanded the list (finished for today)
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
Yes, just enabling a service or program is one line in nix but the module behind can do a lot of things (install the package, create and enable the systemd service file, install and setup any db if needed or other service dependencies, set some default settings…). For some service that would be quite the bash script.
Also theming in nix is very easy for the apps supported by Stylix.