Other than my own experience, I've seen some data that led me to believe that Go is more pervasive than I previously perceived:
Go started out with a share of 8% in 2017 and now it has reached 18%.
In addition, the biggest number of developers (13%) chose
Go as a language they would like to adopt or migrate to.
The same survey claims that Go is more popular than C. I would be interested to know how well the Jetbrains user base represents the overall developer community.