I think memes also needs a couple more rules. Specifically I think the posts should be memes.

Cloudflare is having some weird issues with Discord this morning.

Federation shenanigans would be my guess. If you were on instance B and moderating instance A then instance B admins would have control of your account instead of instance A admins. So if for some reason instance B admins decide to ban that user then they are prevented from moderating for instance A.