The inadequacy of the documentation has no impact on the production readiness in the scenarios where Go does work. As a comment above notes, Google is using Go successfully in production. We are also using in production.
Production ready != done.
Good enough is not the same as done. One data point does not define a trend.
Appengine+Youtube+<everyone-using-Go-in-production> isn't exactly one data point. Each independently is probably a ton of datapoints as services tend not to use one machine.
While it is a bummer, I'd argue that the OP is the one that does not define a trend.