The big instances are bad enough but big communities are absolute killer of decentralisation
When you go to /c/books on your server, you don’t see an agglomeration of all /c/books on all servers of the fediverse. You only see that server’s /c/books, if it even has one.
This is a fatal flaw of lemmy which concentrates power enormously into the hands of the owners.
The default view should be all /c/books on all federated servers, with an easy way to filter only local posts.
Lemmy will turn into reddit if this is not quickly rectified.