Scaling things almost always makes things more efficient. Cooling a data center that does the work of a million desktop is going to use less energy to cool it than those million desktops.

There is now though. So why not federate again?

Well, #1 is kind of impossible now. Different people can have the same ID on different instances.

#2, unless they really want to just be their own separate community completely, like an entirely different website, then yeah of course. That’s the point. Regarding the current major defederation, my understanding is that this not meant to be permanent and is a different situation. It’s a workaround basically.