Why is calling for a civil conversation and disagreeing without being disagreeable inappropriate?
As the rules say, "This isn't grade school."
Here are the forum rules:
"Instantly Bannable Offenses
These offenses can result in temporary forum suspensions or permanent bans. If you get a warning, heed it!
Insults. Direct personal insult of another forum member (e.g., "You are an idiot.") and other name-calling. Why? Because this isn't grade school. People should be able to discuss or even dispute other's posts without insulting people. You may dispute somebody's opinion but not attack/flame the person who stated it. There are a lot of other non-direct-personal insults that won't necessary get you banned instantly, but depending on the context/nature may lead to post editing, post deletion, warnings, or time-outs. They include telling people to shut up and being extremely or repeatedly rude or sarcastic. It's not your place to tell other users they are not welcome; if they follow the rules, they are welcome. Bottom line -- don't try to tick off others and don't make discussions unnecessarily personal. If somebody else insults you, report their post; their post does not give you a license to break the rules by returning their insults. Although we do not read Private Messages sent between forum members, the rules for appropriate and inappropriate content apply to them as well.
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Trolling. Do not post in order to anger other members or intentionally cause negative reactions. For a given post, this can be a subjective call, but a pattern of such posting or an especially egregious case will get you banned."