"You don't know what you are talking about" is snotty and imperious?
Maybe.
I've been called a terrorist. A nazi. A jihadist. An idolator. A commie. All these on crevo threads.
I try to stay polite, but Lord help me, I lose my patience with some people.
I fully understand the human struggle to keep up politeness and manners, but it simply MUST be done. I've made apologies to more than one poster during my relatively short term at FR, and I may have to do so again in the future. But, if I lose my patience, I at least make an effort to keep it off-line; to mitigate the permeation of my angst into the text of my posts. Yeah, I'm not perfect; I make mistakes, but the effort has to be put forth. And, please, don't overlook that I'm taking BOTH sides of the crevo divide to task on this point. As you note, repeating a partial list of names you've been called on crevo threads, the problem is a SHARED problem, and the responsibility to fix it must also be a SHARED responsibility.
Respect for other posters -- whether you agree with their stated position or not -- has got to rule the day; it's got to be everyone's personal responsibility. We see the result of that not being the case, and it's nothing if it's not butt-ugly.