My answer to this is so complex I'm not sure I can put it into words. Grew up at the very height of cold war US #1 propaganda in a military community. I'm a veteran. So many moments where those sentiments rang a little hollow, even if they were enticing, but I really wasn't aware enough to put it all together at any one moment.

I'm in my 50s now, and over time enough of those myths of US exceptionalism were weakened as I learned more about US imperialism, and became more aware of how easy it is to find yourself choosing between food and medicine (or even getting neither) in the US, and could see how so much of our culture revolves around hiding our nation's flaws from ourselves like avoiding seeing your own fat naked ass (or similar insecurity you have) in the mirror. Edit: I can't not drop a line here about realizing that our mistreatment of African Americans didn't end with the civil rights act. I grew up privileged and sheltered enough that I believed it had for a very long time. And our police problems are only the most high profile example of how this continues. I don't think it's the most pervasive nor the most systemically damaging example though.

I think we have the potential to live up to every single bit of propaganda. I think we've done a poor job executing on it. Individual people I meet every single day amaze me with how wonderful and generous they are. But huge groups of our people are pretty awful, and a much bigger group is still avoiding looking at their fat ass in the mirror when they come out of the shower. I'm not sure whether things will head up or down from here.

I'll close with this, which covers most of my bases I think: https://youtu.be/OO18F4aKGzQ