gnu-nt-copypasta

I'd just like to interject for a moment.
What you're referring to as WSL, is in fact, GNU/NT,
or as I've recently taken to calling it, GNU plus NT.
WSL is not an operating system unto itself, but rather
another free component of a fully functioning GNU system
made useful by the GNU corelibs, shell utilities and
vital system components comprising a full OS as defined by POSIX.

Many computer users run a modified version of the GNU system
every day, without realizing it. Through a peculiar turn of events,
the version of GNU which is widely used today is often called "WSL",
and many of its users are not aware that it is basically the GNU
system, developed by the GNU Project.

There really is a WSL, and these people are using it, 
but it is just a part of the system they use. NT is the kernel: 
the program in the system that allocates the machine's resources to
the other programs that you run. The kernel is an essential part of
an operating system, but useless by itself; it can only function
in the context of a complete operating system. WSL is normally used
in combination with the GNU operating system: the whole system is
basically GNU with NT added, or GNU/NT. All the so-called "WSL"
distributions are really distributions of GNU/NT.