Change doesn’t happen overnight. It’s hard enough to convince 10 friends to change messaging platform. Imagine trying to move a whole community to a new service.

Joplin didn’t have official support on r/joplinapp. It was a sub created by volunteers but as it grew in popularity it got some semblance of being official. Still afaik this post is the first one by the founder.

So I guess it’s only the matter of time before someone out of Joplin community will make the sub dedicated to it to repeat the history