This is interesting because it's not like a fan discussion sub or shitposting place, but an actual support platform and community resource for a third party open source project.
In the past these used to be on IRC which works much like the Fediverse does now. Servers were run by people and you made channels, like communities work on Lemmy now, and you signed up an account that was unique to the server too.
When problems happened with the people running that server that weren't resolvable to both parties satisfaction the third party project and it's community simply packed up and set up a new channel on another IRC server or started their own. The ability to do this with a Reddit-like discussion forum has been missing until now and that really excites me about the Fediverse's potential.