

The way ActivityPub federation works, once an instance is “linked” (like lemm.ee linking with lemmy.world, lemdro.id, etc), the instance will now send them an event once a post is made or something like that.
For example:
- lemm.ee —links–> lemmy.world
- lemm.ee user makes a post A
- lemm.ee —notifies–> lemmy.world
- lemmy.world makes a copy of post A.
So yes, every Lemmy instance stores copies of new data from other instances once they link.
LLMs are such an amazing technology, but they are used and understood completely wrong by the corporate world.
People are growing dependent on it which is a problem, but the transformer model is really cool imo.