As a person that uses Go and is quite fond of the language, I think it's kind of a misnomer to suggest that Go projects will be sane/built well due to the language. I think that Go invested a tremendous amount of time into making their syntax simple and formattable. I don't think that at, say, 10m LoC, a Go project is any more sane or performant than other languages, I just think the syntax and style of every file is probably more consistent.

Basically I think that Go makes it easy to open and read almost any file, regardless of what you know about the rest of the project. I think that's great, but I also don't really think that it prevents you from building bad software.