the second thing being so large gives users the expectation that they can and should be able to see everything.

and if/when bsky "decentralizes", some users will say it's not worth it trying to keep track of the people they're following and give up, or they'll stay on the largest chunks of the network, the most centralized core. 

 Bluesky contemplates federated backends sync all data, so that concern only applies to nostr (relays), not Bluesky. 

 sync all data? from where?

sorry, i guess i'm learning still. 

 Bluesky separates the concept of the server that hosts your posts from the server(s) that clients connect to to fetch posts to display. The second group of servers intends to connect to every possible first group and download everything. It’s not like nostr where relays don’t sync. 

 is the expectation that the client servers would always look at the whole network?