Could just be false signals for people googling "Go" the game and not the language. Golang is the first search on a generic search for "Go" (https://www.google.com.hk/webhp?hl=zh-CN&sa=N&tab=lw#hl=zh-C...).
Also, in my experience, very few (mainland) Chinese play weiqi. Everyone plays Chinese chess, but very few play Go. So people searching for "go" are quite likely searching for the language. (Although I'd expect that the people who know about the language know enough to search for "golang", so who knows)