Or perhaps in some sense.... but mostly doesn't need much attention.
It seems that a lot of people think an OS without "Desktop environment" is incomplete.
I have installed some times Ubuntu, and I had to disable the desktop environment and enable the display of device
probing when booting to have an OS as "must be".
I have installed some times Debian, and I had to install a lot of things (like C compiler, make, man pages, etc)
to have an OS as "must be".
And when I install FreeBSD, I must install X11 and a lot of X11 clients separately, to have it.
The most out of the box is OpenBSD for me, I install it with xenocara and that was all.
My concept of an OS is something like traditional Unix plus X11 server to be started if and when I want.
And it seems that most linux distros are far away, although Linux is Unix like.
Linux distros need a default desktop environment, to differentiate among themselves, otherwise all would be almost identical.