Bro, I believe you're very much on topic and you make some excellent points.
As you said, the fact that the US is multicultural makes us a stronger nation - stronger than anyone else. Many of our advancements come from the fact that we have some of the best minds from all over the planet all right here in one big melting point.
Again we have our issues but the possibilities here in America are truly endless. That's one of Bidens main talking points when he brings up that he's spent the most time with Xi Jinping than any other American leader and during one convo, Xi asked him to define America with one word. Biden answered "possibilities".
I believe this is why other nations will never be able to match us, unless they are also willing to become multicultural nations. We will always have them beat because as you said, we both import and export ideas. We are not overly nationalistic where we look down on ideas that are not our own. We welcome ideas from anyone, from everywhere. And we take those ideas and build on them.
The world is literally walking in lockstep with America. Even our enemies want to be us, quiet as it's kept. They want access to us, to what we have.
America has truly left a lasting example on the world, that other nations aspire to be America on our worst day, because on our worst day, we are still better than them on their best.
Any other nation, what happened on January 6th overthrows the government. Here, we have so many checks and balances in place that while it came close, it didn't happen.
What makes the US sick will take another country up on outta here. On our worst day, we still have freedom of the press, a military that refuses to get involved in domestic politics, and a congress and even Supreme Court (a Supreme Court that has folks who were appointed for the express purpose of backing an electoral challenge at that) that will still do their part to uphold the constitution of the US.