@mint so
>the remote/receiving server participates in determining targeting and performing delivery to specific inboxes.
>Origin servers sending publicly addressed activities to sharedInbox endpoints MUST still deliver to actors and collections otherwise addressed (through to, bto, cc, bcc, and audience) which do not have a sharedInbox and would not otherwise receive the activity through the sharedInbox mechanism.

is pleroma not implementing any of these checks and just gobbling up stuff