No. There was a recently banned poster whose DA had 0 posts and she was still caught and banned for 3 months. I don't know if it's right to reveal her name here, but it did happen, simply because she had a DA
In that case they should be banned again, but not because they're DAs, rather because they are bringing the forum into disruption with their posts.
Then it's most likely because she said so herself or something, how would anyone know without any posts being made? Anyway, before anyone here gets permabanned, he gets a ton of warnings and a ton of short bans. If he/she still gets permabanned in the end, then we are usually talking about a hard-core troll or simply a nutcase, no need to see them again via DA.