The idea that people did not thank the US is laughable.

I have literally met Japanese people who have been thankful to the US for dropping nukes on them while pissing themselves about North Korea having missiles. The difference is that they perceived the US as an enlightened hegemony, and this is in part because of the relative pennies spent on Africa.

Incidentally, There is an animated series called Gasaraki with an endearingly simplistic and worshipful view of the US that aligns with how they viewed the US, especially at the end.

Good luck with AI hunter killers replacing good will.