@vmstan Charitable interpretation is that this is the total number of users *ever* including now gone instances, which would of course be double counting since most of such users would have migrated elsewhere.

To some extent this is arguing over how tall the shortest dwarf is - Fediverse total users ever is a small fraction of Threads monthly active, for example. “Twitter minus Nazis” turns out not to be a generally compelling reason to switch. Which probably explains the enduring existence of Nazis.