Actually I have known it, but I only mentioned about things related to Permanent Bans (latest wave, new changes in rights of global moderators, more actively works and initiatives of admins, global mods, mods). What you mentioned is off-topic. However, maybe someone else did not know it, and your information might be helpful for them.

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Banned users ask for appeals, then when they don't get what they want with their appeals, they attack others even when proofs found, and their general net effects are not good enough to be accepted by global mods or admins to jump out of graves.