This filtered out those who 1) don’t use eMacs 2) don’t use org-mode

I suspect org-mode users are willing to go through an extra step if needed.

My notes are in .org if I want to share with someone else I export to .md and use the output

My take on it is it's for people who live in org-mode. Though I'm thinking a org-social to html converter would be a decent tool to have. One more project to fill my copious spare time.

There seems to be a function to generate a feed based on the posts of the people you are following.