@hexaheximal
How's matrix's moderation tools?
There's someone who likes posting gore to public matrix and xmpp channels, some of the most maintained xmpp clients implemented some moderation tools where an admin can delete individual posts or everything from some account.
It unfortunately only works with some clients, but I pretty quickly learned to switch to the clients that do support moderation.
I thought matrix uses a blockchain/git like synchronization algorithm, so I think deleting messages is harder to do.
(Though on the plus side, If you want the message history it does get synced between servers and rooms can stay up if one server goes down.)
For what it's worth, I kind of think from the xmpp space the client that's got the best chance to be called discord like is movim.
https://movim.eu/