PSA:

Pleroma (and possibly its forks) users, to block the spam you can

1. domain-mute entire instances spam originates from:
Settings -> Mutes & Blocks -> Mutes -> Domains
2. Add the discord link they use to wordfilter
Settings -> Filtering -> Wordfilter

I'll make sure to "elevate" the "priority" of cleaning up and making domain mutes to be more accessible.

yours truly,
alcoholic admin and pleroma dev