There’s some caveats to the rise. There’s likely spam waves hitting pixelfed (~300k), 2 months ago a spam wave hit writefreely (~170k), and possibly Bookwrym currently (~4k). A weekly post breaking it down by software: https://threadiverse.link/piefed.zip/c/fedilytics@piefed.zip/p/1838661/growth-of-the-fediverse-20260920