A central place where everything happens. Or just the illusion of that.
Lemmy does not feel the same between instances/servers, and that makes everything seem smaller.
The only reason there was a small spike in lemmy users was because the competition entered phase 3 of their enshittening. Just like Mastadon lives off twitter going downhill. It’s not that the product is great, it’s just that it mimics a successful service and that service is going to shit.
That's why I browse "Everything" instead of restricting myself to an instance. I then block communities that I'm not interested in, and also make use of keyword filters in Sync to block unwanted stuff.
note that "everything" doesn't mean everything. It will show you all posts your local instance pulled in via federation (e.g. when someone else on your instance subscribed to it). Depending on how active the instance is you are on, it will have very different results
On Liftoff, everything means everything. It specifically pulls from every instance you put into the instance list at once. Granted, you have to manually add all the instances to the list right now. But that's easily done.
Might just be that the default filter differ between sites and a lot of the servers I looked at in the beginning had local posts as default.
So it was like looking at 12 different slashdot’s, each with its own stories