It seems that you are agreeing with me.

A standard library for a language with a purpose (like Go) should include a lot of stuff related to that purpose. That avoids the need for an intricate web of dependencies and specialized third-oarty code, but ties the language to its purpose a bit more.

A standard library for a use-for-anything-and-everything language (like rust) might be smaller because it relies more on third-party libraries for the specific purposes you have in mind.