I think the author nailed it with "Go is boring". It is, and that's what I like about it. It's just really easy to use, to the point where I don't really have to think about the language, I just write it. Add type safety, built in unit testing, a single code style & automatic imports, go get (yes, I actually like it), and it's an awesome language. Yeah, there are ugly parts, but that's true of any language. I'm not sure I've ever found one that I've enjoyed writing as much as Go.
Keep in mind, the only large systems I've worked on have been in either PHP or Go, so my opinion may be a little flawed.