“active users” is such a vague metric… each platform has its own rules for that, so it’s meaningless (not to mention the obvious inflation of commercial ones, so comparison is useless in practice)

transparent data such as “# active posters”, “# active commenters”, “# active voters”, etc makes a lot more sense if we are not thinking commercially (which I’m guessing is the whole point of independent communities such as fediverse). no need to impress anyone and the metrics become readable