That definitely makes it accessible to newcomers. But costs are going to gatekeep smaller communities from hosting relays as the network scales. There are plenty of obscure conversations happening on the far corners of the network that don’t concern the majority, requiring a full network mirror of this activity just increases cost for minimal perceived benefit.

There does need to be some level of seeding, I think the big push for getting starter packs and the like into Mastodon is an example of that need. At the same time, it’s hard to justify spending the money on extra storage and computer just so I can see posts on furry bluesky or some other niche but highly active community.

[–] optimant@lemmy.sdf.org 3 points 18 hours ago

That’s a good set of points and I agree. I am starting to think this technical difference reflects underlying social / experiential differences:

ActivityPub “clumpy” federation (like a region of city-states) where your view of the network is based on who you and others in your instance interact with - interoperability, but not homogeneity of content or interaction
Atproto “swarm” federation (like a pool of taxis sharing livery, with possibly-but-not-necessarily independent operators), endpoints are exchanging data to compose a single virtual platform out of replaceable interoperating parts - federated but not decentralized, having a primary network (the relay service) holding everyone’s experience together

To me the former feels like it encourages a spirit like original Internet communities (MUDs, BBSs, message boards) while the latter produces that of branded app platforms (Twitter, Facebook, Snapchat).