There are a lot of new Instances are less than a week old. I think Moderators need to tend to their own forums and not have to deal with crossposts from other instances until the moderating tools are more mature. If they need to defederate temporarily, I’ve got no problem with it.
Now, if Beehaw wants to create a “walled garden” just because their mods are power-hungry jerks, remember that there are nearly 900 Instances on lemmy (according to lemmy explorer). If mods ruin a community for fans, the fans can simply unsubscribe, move to the second (or third) most popular Instance and re-subscribe / re-create the forum there and the mods of the first Instance can’t do anything about it (because they voluntarily defederated). The distributed nature of lemmy means that the fans decide what forums are popular. It will be easy to see by sheer number of subscribers, which lemmy/Memes is the “real” one and which one is being run by the jerks.
This also means that corporations can’t screw up an entire social network (like what’s happening to Reddit right now). Reddit is basically a social network platform with tens of thousands of communities and ONE Instance. This makes it easy for a money-grubbing corporation to ruin things for everybody. However, if a company tries to ruin the most popular Instance on lemmy, everyone will just migrate to the second (or third) most popular Instance and the first one will wither and die.