Good looking out, sorry I didn't reply sooner, I just finished a 48hr timer for pushing back against a troll in another stream, I don't have a direct line to you and unlike most people (apparently) I don't have an alt.
Answer: ban evasion. Primary account permabanned by a stream owner triggers this rule. Unless I'm mistaken, and it really is ACCOUNTS we're trying to ban and not the people behind them. In that case, why have I been preemptively banning Jeffrey alts all this time?