much of whats covered in org mode can be handled by vim's folding option. if you write ansible playbooks with coworkers who handle automation as a stream of consciousness out of a single file, folding can save you some sanity.
[1] https://www.gnu.org/software/emacs/manual/html_node/emacs/Ou...
org-mode is a major-mode and covers a little more than that^^
I'm sure most of the individual features are available in vim and other editors, but it's tying everything together in a neat package that's the main draw of org-mode.