It seems contentious to claim that “most developers have left” when the forum continues to show activity. In the past month, 44 topics have new posts, the majority of which are not federated topics. Who are these developers, have they really left, and does their leaving justify shutting down the forum? What is the alternative venue or forum for discussing ActivityPub-related topics, community, software, standards, etc? Does such an alternative (if it exists) provide a better experience for discussing these things?
If the answer is “they’re on fedi now”, then this is what I would categorize as “scattered to the four winds, and there’s no replacement”. The value of SocialHub is that it is a gathering place for these discussions, and it allows for those discussions to be long-form. There is a world of difference between a forum thread and a chain of replies in 500 characters or less. This has been previously discussed as well:
The value of this SocialHub forum is in bringing people together to discuss things, and the introduction of federation in its current form has been arguably counterproductive to this end. Quite simply, if the discussions about ActivityPub are spread all over random pockets of microblogging, then this is an inferior experience to a proper forum with an actual social context. You can aggregate a bunch of microblog posts, but that’s not the same – the focus just isn’t there in the same way that a real thread would remain mostly focused on the same topic. Replying to something is not the same as having a directed discussion. Every new reply is a chance for the topic to drift away from where it started, and if all you have is a reply tree, then you can’t recognize these shifts.
What then? Do we converge on the w3c/activitypub issue tracker, or on the SocialCG mailing list? Or is the discussion around ActivityPub dead, and all that’s left to do is have ad-hoc communications between various devs without any sort of coordination or commonplace? Maybe that’s fine for the developers who have supposedly already left, because what’s the point of having conversations when all you’re trying to do is fix a one-off incompatibility between two projects? I don’t think it’s conducive to any sort of broad alignment, though.
At the end of the day, if the financial and organizational sponsor wants to back out, then we can’t really do anything to force them to continue, but I think it’s more worthwhile to consider the reboot rather than the shutdown. We can’t easily fold the scope of this place into the issue tracker, because issue trackers are not general discussion forums. We can’t easily fold the scope of this place into the mailing list, because this place was started to avoid flooding the entire SocialCG with ActivityPub-specific matters. So ideally something ought to occupy this niche.