Nice discussion of the different architectural model:

  centralized->federated->relayed->p2p

My take is that many did not really know that relay architectures were an option making the jump to p2p (i.e., self-sovereign) which got rapidly re-mixed back into federated or centralized. nostr:note1063mar49nu5edjcr8zqlgjs8zl3dlve5p74twv43sv3s9ztaykhq38vv7w