On Github[0], Go currently sits at #3 for pull request volume (C# is at 10), #3 for stars (C# is at 8), #6 for pushes/commits (C# is at 10) and #6 for issues opened (C# is at 9). By each of those metrics, Go has a significantly more vibrant ecosystem than C#.
[0]: https://madnight.github.io/githut/#/pull_requests/2023/2