You might also give Gforth a try. https://www.gnu.org/software/gforth/
That sounds like a gross exaggeration: https://hookrace.net/blog/nim-binary-size/
The sizes in the link you submitted are very small and rational (what I was expecting to see). I can't remember what it does on Windows without GCC. It might have used Cygwin, but it should have still not been orders of magnitude bigger. This turned me off immediately.