Programming languages are kind of like religion, or one's favorite beverage/food. Everyone has their own preference/coding style. I wouldn't let negative comments on HN steer you away from learning Go. Of course, I'm biased because I write Go code and enjoy it, but there will always be folks who love something and hate something. You'll never know whether you enjoy coding in Go unless you try it for yourself.
Some of the criticisms of Go are valid and some are just haters doing what haters do--hating. Keep in mind Go is very young for a programming language. It's only about 6 years old, but it's use is becoming more and more widespread as it matures.
Although you are correct in that the standard library is pretty much all you need to write CLI apps, this library is definitely useful if you're willing to pull in a third-party dependency: https://github.com/codegangsta/cli
Some of the criticisms of Go are valid and some are just haters doing what haters do--hating. Keep in mind Go is very young for a programming language. It's only about 6 years old, but it's use is becoming more and more widespread as it matures.
Although you are correct in that the standard library is pretty much all you need to write CLI apps, this library is definitely useful if you're willing to pull in a third-party dependency: https://github.com/codegangsta/cli