Again, inflating logic to a ridiculous degree does not make you right. International relations. Relationships are important - especially with the Chinese. They are particulary sensitive to things like this.
I expect Donald to
1. uphold this country's agreements that we freely entered into.
2. if he wants to change things, to do it in a way that is consistent with diplomatic norms and conventions.
3. put America's interests above his petty needs for praise
4. admit it if he makes a mistake
He did none of those. Why are his actions in America's interest? The world wonders.