He implied replacing nano was the first step, before using it for more complex (software development) tasks. First use it just for quick one-off edits of /etc/blah.conf then graduate to using it for longer editing sessions.
No, nano is not my daily driver. It's what I use when I want to quickly edit a file with root access because, funnily enough, I'm not in the habit of running my primary editor with superuser permissions :) Nano is a low-hanging fruit that was the first of many tools I gradually massaged the editor into replacing.