The absurdity of it is what would bring people together. An unknown alien and interdimensional threat that would take years and years of cooperative research to even begin to understand how it was possible, all this while the threat of another attack would be looming at any moment vs oh no the American blue guy we have a decent understanding of that did war crimes did another one.
Though my view of the ending is skewed from the HBO one because they make a pretty good case for why the comic ending works.
https://upload.wikimedia.org/wikipedia/en/c/ca/FlagSmasherMarvel.jpg
Lmao really calling out anarchists here