so, you say that Mastodon is the biggest app built on ActivityPub. I assume you're measuring by number of users and not lines of code or screen size.
Is this still true? Threads is closing in on 300M MAUs. Some percentage of them have Fediverse sharing enabled. If it's even 5%, that's much larger than existing Mastodon user base. And Flipboard has 150M registered users and I think they're all on the Fediverse.
