I misspoke (miswrote?). You are correct, it was created to address the issues Google had with C++ and—crucially—other internally supported languages like Java and Python could not adequately fill C++'s role.
If Java could have filled this role in both compile time and memory efficiency, Go in all likelihood would never have been created.
But yes, Go beats Java in compile-time speed as well.
Go was created to overcome complexity issues and compile times of C++ (not Java):
https://commandcenter.blogspot.com/2012/06/less-is-exponenti...
https://go.dev/talks/2015/gophercon-goevolution.slide#4