Can you at least link to some of the efforts? This post is light on details.

I’m already seeing parallels to the MeetUp situation: MeetUp hasn’t shut down, but it’s becoming disliked enough that multiple teams are working on replacements. Unfortunately it seems they’re all more interested in doing greenfield work of developing the replacement themselves when it would be more effective in the most dedicated contributors to the various teams were willing to join up and work on one promising replacement.