Unpopular opinion but I don't think refederation with beehaw.org should be on the table. They loved the concept of federation when they needed users, and then once they've grown enough they said okay now we're gonna be a closed island and the other peasants need to rise to our standards before we refederate with them. The moderation excuse is obviously not sincere as users could have easily volunteered to moderate.
No matter how fancy their writing is (and there was indeed lots of it, why try too hard to justify the decision?), I think the trust has been broken. Why would I comment on their threads ever again and risk having my content "locked" in their instance if they go on another ego trip and defederate again?