The thing is that they made mistakes 8 months ago. However, some are still making stupid mistakes by ban evading. Kinda hard to say you're reformed and not going to do it again, when they still break server rules by ban evading...
Also, it's not like it was 1 mistake. It was mistakes made over a duration in majority of their cases.
Personally, I think most people don't "fight" as much anymore, because a lot of people are choking out the people are trying to make a spot/place for them. Or they are discouraged to even bother. Kinda hard to want to fight a gang when they non-stop shit talk sidechat after/before getting in an engagement... at least for me. When I'd see that shit, I'd laugh and not even bother.