No, but the go tool/package manager doesn’t necessarily, by default, have to proxy each requested module through Google run servers. It can fetch modules directly from the source.

That said, I don’t think that the go tool’s current behavior in regards to the module proxy server can be considered as phoning home.

The proposed metrics collection however absolutely would be bad phoning home behavior.

Nope, I think the go module proxy is just fine. See my other response[0] for an explanation of what I meant.

[0]: https://news.ycombinator.com/item?id=34773848

It definitely only should use network when I invoke the download package command.