I think those communities will eventually arrive on the fediverse. If anything, building the community yourself and gently guiding people to the alternative could help fence sitters who don't understand the full implications of reddit's new policies for the 1% of power users who actually create most of the content.
90% are lurkers, 9% will comment and upvote, while 1% of users generate content for the others.
Murdered: Soul Suspect casts you as a detective solving your own murder from beyond the grave.