My thoughts in the context of this thread.

I did try org for some time (initially when I switched to Emacs) as mentioned here

But eventually I realized that markdown is more pervasive.

I am aware that Org is supported outside of Emacs as well.

But compared to markdown, that is nothing.

But that is not necessarily the point.

e.g. When I do code review, most of the git service providers support markdown. I was surpised that even Azure git supports Markdown (So does gitlab, probably bitbucket as well, it as been a while since I used bitbucket.)