Easy, - Backed by Google - Plan 9 and UNIX people as designers - Docker migrated from Python to Go - Kubernetes migrated from Java to Go - After Docker and Kubernetes explosion, all Cloud Native Foundation projects start using the same language, thus adoption
This take sounds highly unrealistic.
No one in their right mind would ever say "well Docker/Kubernetes were developed in Go, thus that means it's a good idea to develop a totally unrelated application that bares no resemblance or shares any use case in Go as well".
Also, migrating away from an interpreted language to a compiled one to develop performance-minded applications does not mean that the compiled language is suddenly spectacular. It just means the initial proof of concept ran it's course.