Have you ever tried finding anything the the Bash manpage? It's the whole book! In one manpage!! For many tools, not just Bash, I often just use google to search the manpage, which really demonstrates a failure of our documentation tools.
And GNU's documentation is excellent. Isn't it a requirement for some of their projects (Emacs?) that a feature must be documented to be accepted?
With that said, Info's (the CLI command) UX seems to be a spin-off of Emacs, and just as obtuse to the new user. I'd accuse linux users of being hidebound for sticking to manpages, but Info is really challenging to navigate. I mean, xkcd.com/1343 has a point.