https://nichegamer.com/discord-issues-warning-to-all-using-the-little-witch-nobeta-server/
Discord's Policy Lead appears to be Savannah Badalich. The Head of Trust & Safety is John Redgrave. So, you might want to go lobby them (or anyone else for that matter, although if they're too far down the rungs, they might not have actual power) for Discord to be less stupid about anime art, although I'd recommend not being overly hostile.
I'm personally not fond of this sort of tit for tat rhetoric in this article.
Also, porn science (for debunking puritans): https://qoto.org/@olives/111440906410871858