Poland has no real historical grievance against USA

Nobody 'gives' jobs, except the worker doing them.

And foreign or other companies, 'investing', especially private equity companies, take far more than they 'give'.

Exactly.

There will be no substantial progress in modern civilisation if we fail to find a way to compensate those who create wealth through their hard work more fairly. Why are so many people unable to see that? :-/

Because people with money fight against every attempt to more fairly regulate economies.

In other words, despite numerous examples you hold the communist failures close to your dark heart.

Don't be silly.

Capitalism and Communism are two extremes; and nobody needs extremes.

If that's the case, then why do you hold communists' ides so closed to your heart? May be, this is extreme position in attempt to manipulate?

That might been relevant right before ww1 when characters like Paderewski was popular and a play at the time refreshed the memory of Americans about Kościuszko. Nowadays his statue (thankfully hasn't been removed yet) was thrown paint and devastated slightly by the Afro-American community during a riot. Not knowing that Kościuszki desired for his property to be sold and used to free slaves in America (which was ignored by the handlers of his will if I am not mistaken)

An American ambassador or Polish one might mention it as a trivia, but proof for any strong bond or historical kinship is mostly ignored, not well known or not cared for.

One can meet one or two oddballs that have dived in historical knowledge but, the general mass, media and journalists do not put such weight on it compared to Hungary or Lithuania or Belarus (Belarus and Lithuania can be as much antipathy as positive depending on circumstances)

Interesting point.
Nonetheless, numerous Polish-born US citizens have been some of our staunchest patriots, e.g. the pianist Jozef Hofmann along with the "Father of Vitamin Research" Kazimir Funk.