I don't want to put words in Hans mouth or speak for him, but it seems that the intent here is not so much to do away with disagreement but to keep dismissiveness away. It is okay to disagree and provide a dissenting opinion. But to simply say "You are wrong and there is not other way to think about this..." is at the heart of the rules here. I think that there are many in the GT group who disagree with pretty much anything that we of the PTT group would put forth who are capable of doing so in a way that engages and doesn't just dismiss.
I would presume that a Traditional Theology forum would be similar.