Wow, that's a whole lot of hate there.
But, then I saw that the OP lives in DC and it all makes sense now. The DC crowd is quite...well, I won't say.
Looking at "the bad" list, the third point is so interesting. I often wonder, on what grounds is it that people assert that some visitors to the Sky Club bring down the exclusivity of the room? I have come to learn that you can't truly predict someone's salary, pedigree, educational credentials, credit score, values, moral superiority, delta spend, or worthiness of being alive based on the way that they look in the Sky Club.
But, then again, the DC thing may come into play. I'm quite the anomaly here. Although I live in the District, I don't make it a habit of asking people in the sky club, nor those seated next to me on the plane, what they do and where they went to school (and without the simple courtesy of first asking their name or how their day is going). I simply say hello to people, even if they are unattractive (another abnormal habit of mine).