I guess some Users will not or wont understand it that they are banned permanent for breaking the rules.
Specialy when they doing an ban evasion with other and new Accounts.
How will they not know about the ban whether temporary or permanent? There should be warning for such ban on the users profile to notify them except the users want to ignore it and go ahead posting. That can be what this user did and expecting he will not be caught. He did not get away with it finally.