The problem with that is that many of these discussions are about opinions, not solid facts. When you say someone is "clearly ignorant" based on their opinions, its hardly clear. Especially with topics in the Pit. For damn near any position you take, you can quote "experts" that agree with your opinion. I can take the opposite side, and find just as many "experts" and then call you ignorant because you choose to believe your experts instead of mine. Allowing that serves no purpose at all.