I've never used kubectl, but I just came across https://github.com/andykuszyk/noman.el which is an Emacs interface for browsing the `--help` output of commands:

> I primarily wrote this package to navigate the command line help from kubectl and aws, both of which have nested sub-commands, and quite verbose (and helpful!) command line help.

> Neither of these programs ships with man pages, or similar offline documentation. I find myself consulting the command line help often, but struggling to find the experience very ergonomic.