(2) Some people are hyper-literal to the point that they're incapable or unwilling to admit to ambiguity in anything.
(3) Some people post as if they're in a perpetual bad mood. Every post is snappish and sarcastic. "Terse" is a good day for these folks.
QFF (Quoted for funny). Because it made me laugh.
(As an aside, I wince everytime I hear someone say something like, "It's his opinion, and we have to respect it." That's so horribly, horribly wrong it should make your teeth ache. What we should respect is someone's right to have an opinion, not the opinion itself. Oh, and while I'm at it, there's a fundamental difference between an "opinion," and a "preference." The difference is truly worth learning.)
I'd agree here too, except that, people being people, sometimes when they say a thing, they do so informally. They might say,
"It's his opinion, and we have to respect it" and then might (or might not) mean exactly what you said
(What we should respect is someone's right to have an opinion, not the opinion itself) but have a looser way of expressing the sentiment.
With communications, people can be very different in method and yet very similar in content. And the reverse can be true as well. Which goes back to your point no. 3, or maybe, it is hyper-definitional in some cases, rather than hyper-literal. You know, assuming the other guy doesn't meet our "definitional qualifications" of how we'd say a thing, so he must not mean what we'd initially assume he couldn't have possibly thought, regardless of the fact that when it comes to words, at best they imply, but never fully contain.
In any case, in my opinion, sometimes you have to cut the other fella some slack until you can either figure out exactly what they are saying, or can get them to clarify it in some way.
Then butcher their innards.
But to me two things would avoid most "getting upset with the other guy too much."
1.
Most of the time people are arguing stuff about games around here. And entertainment, things like that. That's about all you need to say about that if you think about it awhile.
2. A little humor,
the ability to laugh at yourself and the other guy, well it reminds you that laughing at yourself and the other guy is very normal. Cause I've never met a perfect fella and never seen one in a mirror either.
Though my wife did tell me that I came awful close to being a perfect idiot once. So that's something I guess.