The problem is not a lack of resources or volunteers. This topic alone is full of people offering both.
I agree with @melvincarvalho that a person leaving a project should “step down considerately”. Not destroy the project to save it from their (perceived) political enemies, by refusing to share admin access with other members of the project wanting to continue it, unless those members first comply with some arbitrary list of conditions.
In a reply to @devnull in their topic about FediCon, I suggested;
The main barrier to this kind of experiment would be getting access to an export of the full archive of public posts made to SH. I presume admin powers are required to export this. It would be a show of good faith for someone with admin powers to export such an archive, and make it available in a neutral location.
That way, even if this Discourse instance were to vanish in a puff of smoke, we would at least retain access to our public history. Ideally in a form that could be imported into a new forum instance (Discourse or otherwise), if that’s the consensus. But a static archive that keeps existing links alive would be better than nothing.