I don´t agree that the suit thing is BS. To visit the most powerful man, everybody has to wear a suit, otherwise it is disrespectful. Selensky often poses in military uniform although he never dared to go to the front, he is just acting. No wonder, he is an actor by profession.
He indeed should be more thankful, so far the US didn´t mine anything, the deal is not even arranged, so what for should the US thank him?
And he lied several times bluntly, e.g. when he said that Russia is invading his country since 2014.