I'm not an admin or a moderator, but i can probably guess why
Discord isn't privacy-friendly, and the majority of those who will join will probably be people who should not join, journalists, pro-lifers, people looking to dox members of SaSu like the fixers, and most importantly, a discord server that's meant to serve the same purpose as this forum would be against discord terms of service, it'll always be terminated and discord will probably report members to suicide prevention, even if we gatekeep the server like creating a one-use invite for each member there will always be a snitch/rat pro-lifer who will find a way to get into the dc server