Re: ..and constrained US citizen's world view
That seems a touch exaggerated.
I mean, I haven't been to that many countries, just France, Switzerland, Italy, the Bahamas, and Canada. I don't bother with the TV news, I'm on the net, might as well get my news here. I get most of my local news from a site that started out as a blog, and kind of expanded from there, because the local TV stations are worthless and the local paper is owned by USA Today. I don't have the opportunity to travel much any more, so I watch travel videos from all over the place. There's lots of places I'd like to visit that I probably never will. I've been to about half the states, I'll pass on Nebraska, but I'd like to get to Washington and Oregon, and back to California. I was in Chicago last week, drove through Kentucky, Indiana, Michigan and Ohio, I don't live in any of those.
But world news is easy to come by, though of course these days it's dominated by Ukraine and the Israeli genocide. I'm here on El Reg, lots of Brit stuff here.
One guy I know spent a semester teaching in Latvia recently, he does international teaching tours periodically. It's been a while since I've been to NYC or NOLA, but I've been to both, I've seen all 3 US coasts, driven Route 66, and regularly watch a UK Youtube channel about road trips and another about canals. I am handicapped in that I'm terrible at learning languages, I can read French but can only catch a few words if it's spoken, only know a little Spanish, and German is unintelligible to me, but automatic translation that was scifi when I was a kid is real now.
Maybe my experience isn't typical. But it's also not that uncommon.