To be fair, a lot of these points apply to most first-world countries. Take Canada, for instance:
3. WE KNOW NOTHING ABOUT THE REST OF THE WORLD: While our school curriculum & media does seem to focus a bit more on other parts of the world, your average Canadian is still pretty ignorant about most nations that don't have a white majority (and, to a lesser extent, non-English speaking nations).
4. WE ARE POOR AT EXPRESSING GRATITUDE AND AFFECTION: Definitely true of most Canadians, outside of parts of Quebec and the Maritimes.
6. THE REST OF THE WORLD IS NOT A SLUM-RIDDEN SHITHOLE COMPARED TO US: Similar to number 3, people seem to have this attitude about non-white countries, and certain non-English speaking nations.
8. WE’RE STATUS-OBSESSED AND SEEK ATTENTION: This isn't necessarily true of Canada in terms of nationalism, but on a personal level, we're definitely guilty of this one.
9. WE ARE VERY UNHEALTHY: We have pubic health care, which is great (and possibly one of the reasons why we tend to live slightly longer than Americans), but we also have all of the same unhealthy, overly-processed foods, and the decline in physical activity. Our stats for obesity, heart disease, etc. aren't too far behind the US.
10. WE MISTAKE COMFORT FOR HAPPINESS: 100% true in Canada. Big cars, big houses, expensive clothes, etc. -- all staples of Canadian culture.