

To be fair, discord is maybe not exactly the most appropriate place to disclose potential security issues, and it’s possible OP derailed an existing conversation to bring this up.
I realize they are probably trying to imply a more ominous tone to the response though… and which one is true (or both), I don’t know. Seven days does seem quite extreme to me though (but they also claim in another place it was only 3 days).
Sounds like an attempt to curb their massive abuse problem.
On Matrix, you can actually upload files using special message types that don’t even show up on normal clients, but persist forever… you can imagine the very illegal types of content that people post using such methods.