I'm not saying that it's not without use-cases. I'm saying the readme is pompous and overstates its usefulness and was clearly written by someone who doesn't have a clue about the tools they're replacing.

If you have npm already.. I guess?

I personally haven't had a windows machine without git in years. Distribution for windows includes somewhat proper shell with unix utils. I can use the same .bashrc I have on my linux machines, write commit messages using vim, have colors in the terminal, etc...