Not necessarily. I suppose the hello world tutorial shows hello world in Chinese mostly to show Unicode. And as for this link, this is just an external link (http://blog.safariflow.com/2013/02/22/go-as-an-alternative-t...) that someone posted on a forum. Things like these happen on every forum in every country.
http://bbs.studygolang.com/thread-278-1-1.html
Notice that, despite English content, the forum looks Chinese-language oriented. I think it is cool, but not normal to me.