It lists the channels and some versions, and has a short description; "This snap provides an assembler, compiler, linker, and compiled libraries for the Go programming language."
When you said "the whole story" I expected there to be some sort of story but I guess I might have misunderstood what you meant.
I've recently revisited asdf, and based on some testing, started moving my various compilers/interpreters to that. It's a "general" version manager - that works like rbenv for "all" languages.
I'm not sure if I'd use it for deployment - but for development it's quite versatile.
(all praise mwhudson for maintaining the Go snaps -- `snap info go` for the whole story).