Apparently aussie.zone is asking users to DM evidence of being over 16, and the implication is that of those who don't - he'll ban/delete their accounts.
But absurdly enough, 4chan is exempt from this because all activity on there is anonymous. Not through accounts. So if the Fediverse had anonymous, non-account posting on-top of regular account-based posting then people could post anonymously happily, but anyone with an account would have to verify.
Make it make sense.

