Why are communities on Lemmy.ml more full compared to the same on a different Lemmy instance?

https://lemmy.sdf.org/post/13415

Why are communities on Lemmy.ml more full compared to the same on a different Lemmy instance? - SDF Chatter

For example, I’m on Lemmy.sdf.org [http://Lemmy.sdf.org] and I joined the [email protected] [[email protected]] community. But there are many missing articles and comments. If I browse directly on Lemmy.ml [http://Lemmy.ml] for the same article there ~90% of comments are missing. https://lemmy.ml/post/1152794 [https://lemmy.ml/post/1152794] has 26 comments https://lemmy.sdf.org/post/11232 [https://lemmy.sdf.org/post/11232] has 0 comments

Because lemmy.ml is the official instance meaning it was created by the developers of the people who created the backend for lemmy as well so people assume it would be the correct one to join.

Thankfully fediverse doesn't work like that and in a few days I expect users to be spread around in instances more evenly.

That doesn't really make sense though - shouldn't comments be federated across all communities?

They do. However, it's only after federation has been established between two communities.

After a while, these newer communities will be federated in and everyone will be connected.

As lemmy.ml is the oldest community, it also has the most history (as the newer instances don't currently get the history).

This will likely be fixed at some point.