In the same way that 99.99% of standard mastodon users are on mastodon.social, yes.
No, the million of users sharing porn on entirely isolated mastodon instances that absolutely nobody wants to federate with because you'd be exposed to pictures of minors within 5 minutes do not count.
No, the million of users sharing porn on entirely isolated mastodon instances that absolutely nobody wants to federate with because you'd be exposed to pictures of minors within 5 minutes do not count.