Well with Go, you don't need them if all you want is to run the project. Go produces binaries, so you just download the binary from somewhere - No Go needed. In this case, iirc he was releasing binaries on the GitHub page.
You only need Go if you're wanting to develop on the project, or if the developer never released binaries.
You only need Go if you're wanting to develop on the project, or if the developer never released binaries.