Reaction to this video from a Pole:
Poland is terrified of war, they’ve been through so many and are still recovering from the last one. They want to be a peaceful nation, but because they are sandwiched between Russia and the West, they get pressured by both sides. There is serious frustration towards America (both parties) for pushing Poland around and far more towards Russia. Many are seriously worried that the US will push them into a conflict they don’t want. The US is making a huge amount of money off this war and the Poles feel used. This has nothing to do with domestic US politics. This individual MP is also not representative of the full Polish political spectrum.
My addition:
Poland is spending 4.7% of GDP on defence, with about 0.5% of GDP going to the US in arms sales. That’s a huge transfer of wealth. It is completely understandable that Poland is angry at becoming the frontline against a hostile Russia on one side and a bullying and tone deaf US on the other.