You can't see beyond your own nose; they explain that Dirty was appointed as a judge within certain limits, the limits of the rules! And according to them, even if he wanted to, he couldn't do anything, firstly because it's not provable, and secondly because they don't regulate this situation...
It seems that all the defenders don't understand one important point. The idea of sports is about competition and struggle, the desire to win. Match-fixing violates the fundamental principles of sports competition because there is no real competition; the result is predetermined. By openly organizing a fixed match and now covering it up, you have simply reduced the prestige of your championship to zero. You are already in deep trouble, comrades. And with each new attempt to justify yourselves and cover it up, you only get more and more involved in it. It's a disgrace.