Almost! At the time of this post, lemmy.world has a whopping 25733 users and is growing fast.
Since my last post yesterday, it has added 4000 new users, making it the clear second-largest lemmy instance out there. Also quickly catching up to lemmy.ml's 36000 (not taking new signups).
beehaw.org (3rd largest) sits at 12500 users, partly because of more restrictive registration requirements.
Source: https://lemmy.fediverse.observer/list
Exciting to see all this growth!
Gotta admit, a week ago when people were posting about Lemmy I didn't see it working. There were something like 500 active users when I checked join-lemmy.org. That was just not enough of a crictical mass to make it work.
Now I've been here a few days (with another login at kbin) and if this volume of traffic keeps up (i.e., there's enough happening to be interesting and make it worth coming back), I think I can live without reddit. I'm happyt to be wrong!