ridiculous ingratitude

This is a common trait in a certain noticeable group. I guess, when you're taught from birth that the world is divided into people and goyim, it's to be expected.

Exceedingly unlikely. Poland tried something like that with Czechoslovakia right after the Munich Agreement, and it was considered the single dumbest thing they did before WW2 broke out. Among what I've learned from all my years observing autistic slapfights over history between Slavic users on the Internet, one of the things that never changes is that the Russians still love bringing that episode up when the Poles (or any other Slav/ex-Soviet nationality, like Latvians) slam them with memories of Molotov-Ribbentrop.

I was recently thinking what country was most innocent in World War 2, and Poland came to mind - with that episode being the single exception.

That said, I'm not sure it was exactly 'dumb' - it did not have any negative consequences to my knowledge, other than further weakening the rump Czechoslovak state.

I can think of very few nations which have received pretty much their entire GDP's worth in aid only to show such ridiculous ingratitude toward their benefactors, from Musk to Poland.

I disagree. The regime there is sending an entire generation of young men to their deaths for American empire, and they're selling their lives rather cheaply. The USG is not a 'benefactor' but rather a 'malefactor', being primarily and perhaps singly responsible for all the deaths in Ukraine.

If you think a country is super corrupt, which I think Ukraine is, they can't be your buddy unless you're up to no good. In the case of the political class in America, they have goals. It may even be funds into slush pool that they plan on extracting later.