I am not a Go developer, and I have no plans to become one.
However I have to point out that this article is not logical. All new languages start out small. Even Java, C# and Python were small once.
Secondly, most cloud native software are written in Go: Docker and Kubernetes being among the most well known. Unless you have been living under a rock for the past 5 years, you will have noticed that these technologies are defining a lot of modern software development for the cloud.