I don't think I see what you see, particularly since most of the critical comments come from members of Trump's administration. But even many of those talk about the proposal from the US, that they are trying to force Zelensky to take, "It's a [deleted word that means excrement] sandwich." And they go on to say, "But Ukraine is going to have to eat it because [Trump] has made clear this is no longer our problem."
Can you imagine if we were attacked by China and things weren't going well (since they can just keep sending far more soldiers than we could field) and when our allies tried to help us, they demanded that we had to cede parts of the US to China, give billions of dollars in mineral rights to our allies for helping us, etc? I would think whoever the President was would have strong objections to those demands.