Fedidb.org recommends to use active users stats instead of total users stats.

Fedidb.org recommends people who view their statistics on their “Threadiverse” tracking page that people should not use graphs and numbers from the total users due to the surge of bot-accounts, and should instead use the monthly active users. This puts the “Threadiverse” at 87,089. Lemmy with 37,197 and Kbin at 44,136. Fedidb.org also shows that the number of accounts is now at 1,75 million, though most of these accounts are probably just bots.