As for your other point, there is no good universal Lemmy linking thing for posts.
In another comment I mentioned that there’s this lemmyverse link thing. From the way you phrased that I’m not sure if you don’t know about it to do and just don’t think it’s good, but I think it’s about halfway to being useful.
What it needs to get the rest of the way is to:
- default to some kind of load-balanced or at least round-robin instance selection instead of defaulting to the original instance of the link given, and
- be built into the Lemmy UI(s) so that it’s easy to grab a lemmyverse.link URL to share.