An implementation with buy-in across the entire ecosystem and language so that you don’t have some systems using threads and other systems using futures and other systems using different reactors, etc.
Also known as the point of the article.
Additionally, that implication is entirely of your own creation. The article explicitly lists many languages besides Go:
> Three more languages that don’t have this problem: Go, Lua, and Ruby.
Perhaps you just have an anti-Go bias?