Append-only logs are fine as long as they only contain pointers to content. You can store 10k blocks in the size of a JPG image. And, when trees grow large, w

Append-only logs are fine as long as they only contain pointers to content. You can store 10k blocks in the size of a JPG image. And, when trees grow large, with stale data that has been forgotten by the network, you can do garbage collection/compaction by shaking out the dead references and sharing a new tree. Its just SSB never reached this point.