Whats the point tho... Fragmentation just means more division, less people interacting with other POVs, more polarization, thats exactly what legacy SM algorithms did... Its just more echo chambers, i get it, echo chambers are comfortable, but they are pointless.
Imagine tommorrow there are 1 million new muslim Nostr users. If everyone is locked into a node of 100 users, that is no different than noornode today. The reach is the same, we all have an audience of 100.
Surely the idea should be to bring larger followings to a central node so that we can actually reach people and have an audience for podsystems for example.