Not really, no one at other other than the original authors though of that, the authors had an issue with C++ compile times and were sponsored by their manager to work on this Go side project of theirs.
Google's networking services keep being writen in Java/Kotlin, C++, and nowadays Rust.
It was intended as a as a replacement for C & C++ for Google's use case of network services btw.
Not really, no one at other other than the original authors though of that, the authors had an issue with C++ compile times and were sponsored by their manager to work on this Go side project of theirs.
Google's networking services keep being writen in Java/Kotlin, C++, and nowadays Rust.
It hasn't been promoted that way for over a decade at this point.