I also have Fortran, Cobol, SWI-Prolog, OCaml, Elixir and Erlang on my computer, so I guess we need to re-implement core utils in these languages too. Using the followings in any technical arguments is just plain stupid:

- it works on my laptop

- but I already have it

You already have a processor too, and something running directly on that is, in fact, more simple.

Yes, but - when you hit some bug or just need some specific combination of commands, there would be thousands posts on the web that explain how to do on unix that will work in Cygwin. Will they work in this environment?