The point is there is already someone who has implemented the almost the exact same functionalities, and its code is open source. However, it seems like someone is still shamelessly trying to capitalize on it.
It's a brilliant plugin, with a great unlimited "trial". I've not came across any bugs, nor have I had any issues with it. So again, what makes it crap?
It's a crap because it's created by someone who is stupid enough to try recreating something that's already been created long time ago. Use it to capitalize on you sublime novices.
There was a open source Git plugin for Sublime long time ago.
https://github.com/kemayo/sublime-text-git