I generally agree with your comments, but do you really think that a language created by such luminaries as Ken Thompson and Rob Pike and endorsed by Google really needed Docker to "take off"?
I would absolutely say Go took off thanks to kubernetes ecosystem & CNCF projects in general, but I've never particularly associated it with Docker myself.
Kubernetes was Google's reaction to Docker, was originally written in Java, and only got rewritten into Go, after a Go advocate joined the team and pushed for a rewrite, there is a FOSDEM talk on its evolution.
