The ban was put in place not for the name, but for the avoidance of the punitive measure. That is like getting out of the prison when the GM places you in there, or creating a second account to spam "F*** you GM* after your first one was suspended.
You repeatedly flaunted the rules after action was taken, namely the name change.
That was the reason you were banned.
I do not give the players the option to change their own names if I see an offensive one.
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