You're talking about a "debate" forum. The word, "debate," invites contrary views, argument, and internet trolling. There is a known rule of the internet and it goes like, "LOL internet." The idea is to use internet unpleasnatries as an opportunity to learn how to ignore with grace and dignity. People are going to do what people do, regardless of whether it's right or wrong.
If you want your own forum with your own administrative powers to block users and create forum rules, maybe Webmaster will create one for you. That's the only way to insure that you will have control over what is and is not posted.
This is an enormous site and the Webmaster cannot patrol and control each and every forum board. Would you prefer Webmaster to use an algorithm that kicks users or censors people's posts? I don't think that you would. I know I wouldn't.