The trick is to both (1) promote equivalent communitie to existing Reddits - let them know there are alternaives to being a serf -- and (2) start posting on there. Be the change you want to see!
The federated future for social is coming, albeit slowly in fits and starts. What is nice is that many of the communities on these two are shared because it is the fediverse.
EDIT: Downvoted why?