such as python, nodejs, elixir and PHP?
EDIT: Yes, there are non-GNU Linux distributions, but WSL is based off Ubuntu specifically and ships with a GNU userland by default.
The point is compatibility much more than CLI UX. The ability to run that nodejs or Python project even though one of the 1352 subsubsubdependencies has a bug on Windows.
I thought Cygwin was very stable and included most things you could want, while also supporting Win7/8, which are the last versions I'm willing to run on my hardware.