When looking at the different communities, I get really surprised at how few people are using it. For instance, the ProCreate community says 4 / users per month. Does that mean only 4 people are being active? Or have I misunderstood?
Adding on to what everyone else has said, the "Users per month" counter counts only the users on your home instance (the instance you created your account on) who have posted or commented in the subreddit this month. The total number of active users across all instances can be seen when you view the community from its home instance.
It could be that bigger instances consider syncing the aggregates to be a low priority task, because the user counts on my instances (100-300 users) are much lower than the counts on the original instances.
I can confirm this but only empirically, as I know of a community where only like 4 people actually commented, but I know at least a few dozen looked at.
That's true. It's gonna take some getting used to, I was hoping to see something similar to
r/ProCreate with hundreds of posts with arts and tutorials. But it will probably grow over the next months :)