Lio, that's great that you live in the USA and have some anecdotal experience to share. I have lived in the USA, and in Bahrain, in Saudi Arabia, in South Korea, in Israel, in Turkey, in Romania, and in Russia among other places. I've traveled extensively through Europe, Asia, Africa, and the United States. I've worked as an educator many of these places. If anecdotal experience means something, I've got yours beat.
Almost everyone I meet ANYWHERE believes that it's not important to know geography beyond where they are from. Europeans are dismayed that Americans don't know more about their own countries, and also believe the Europe is the center of the world. When they talk about Americans or other people not knowing more about "the rest of the world" what they usually mean is Western Europe. However...
PEOPLE are bad at geography. Not Americans.
Some guy in Vegas said the capital of Brazil is Spain. ROFL