Everything up to your last bit about smearing the US is not wrong. As you said, Zalensky insisted on flying in to make the deal, then stepped over the line relative to the original deal they were meant to be doing.
I don't think there's any smearing attempt on Zalesky's part though. Contrary to Vance and Trump's assertion, Zalensky has thanked the US a lot of times. He wouldn't be wanting to smear the US. Trump did begin the meeting diplomatically, it was going fine, he even complemented Zalensky's outfit. Then JD opened his mouth!
It's hard to know for sure what's going on, which may be the point. The theatrics of argy-bargy is like a smokescreen.
I don't think there's any smearing attempt on Zalesky's part though. Contrary to Vance and Trump's assertion, Zalensky has thanked the US a lot of times. He wouldn't be wanting to smear the US. Trump did begin the meeting diplomatically, it was going fine, he even complemented Zalensky's outfit. Then JD opened his mouth!
It's hard to know for sure what's going on, which may be the point. The theatrics of argy-bargy is like a smokescreen.