the idea of what 'batteries included' means has changed a lot in the past twenty years, and like most Go quirks , probably Google just didn't need <missing-things>.

Google is the author of the de facto uuid library in Go, google/uuid. I’m very curious what people think is an exemplary “batteries included” stdlib?

Huh? The universal idiomatic answer to "how to use UUIDs in Go programs" for the past decade has been to pull in a Google dep.