From 2,997 active users across all lemmy instances at the beginning of June, the number increased to 52,797 by June 30th. Source.
An active user on Lemmy is "someone who has posted or commented on our instance or community within the last given time frame.” Source. That means lurkers are not counted as active users. There are currently almost 200k total users spread across the top 10 non-bot lemmy instances.
We’re really building something here!
EDIT: Looking for a lemmy app? Here’s a whole list: https://lemmy.world/post/465785
I don’t think Lemmy could be wrecked as easily as Reddit, (fuck u/spez) as Reddit is under the control of a singular entity that exists to make money, while the fediverse is made up of many different instances hosted by many different people, most, if not all who host their instances using their own money without a desire to financially profit from Lemmy. Plus, even if one instance goes to crap, users can simply migrate to another instance.