This almost certainly won’t kill the Hexbear community, and frankly I don’t think there’s any way they will choose to pony up the auction money. This community has moved from reddit to discord to the fediverse and they’ll probably just be on their backup/original domain chapo.chat for a month or two before switching over to whatever the admins decide to switch to, and then it will be business as usual under a new name.

Still there’s a lesson here about setting up a durable online community - don’t let someone control the domain registration with their personal account, you’re just asking for something like this to happen. If they don’t have one already the admins should set up some kind of organization that can “own” the new domain, donations, etc so that this can’t happen again.