

Yes, the different servers are called “instances,” and each are founded by different admins for different reasons. All the communities from all eligible instances get mixed in to your ALL stream / feed, but of course there is also your personal feed made up solely of communities you’re subscribed to.
I only know that Voyager is a tool, but I’ve no experience with it. I access the Fediverse almost exclusively through web browser.
I’m only a community founder and mod, not an admin. I don’t know much from that POV, but you could always make a new thread in “AskLemmy” or something.
…its usability is fairly rudimentary.
I wouldn’t really say rudimentary; but it’s more complicated than Reddit and takes more time to understand and get the most out of. This is the trade-off for users being nothing more than dollar signs over at Reddit.



Reddit doesn’t have the post scheduler that PieFed has, which integrates with Lemmy. As a community-runner that one’s super-useful to me. Also on the PieFed side, we can add both hashtags and flair to posts, whereas on Reddit there’s only post flair.
IIRC both Lemmy and PieFed have the ability to sort posts in more useful ways, for example there’s 8 different ways to sort “top” posts, as well as sorting by “scaled” and other criteria. TBF, Reddit’s 3rd-party “RES” extension is just plain awesome, and adds lots of things basic Reddit doesn’t have.
Anyway, each app and/or software means of looking at the Fediverse will offer a slightly different mix of features and characteristics. I’m not really the most knowledgeable on that stuff, so again, I urge you to take these questions to an AskLemmy thread, or similar. Could just search on them too, or ask an LLM.