Try to sort the servers by Total users, Lemmy.world is on top, but the next 7 try to look at the row of numbers, you will see servers with many “total users” have almost zero activity posts and comments, compared to the number of claimed Total users.
I’m guessing those users are all fake. Why people generate fake users IDK, but there is clearly attempts to sabotage the Lemmy network.
Trying to penetrate the noise, and figure out more real numbers, I’m sure Lemmy remains quite healthy and is growing in real numbers, if you filter servers that are actively and properly maintained.