I think you're conflating "maintaining a global hegemonic order" with "fucking up a nation that has actively tried to harm the United States AND is provably committing war crimes."
Is American hegemony all sunshine and roses? Fuck no lol
At least it is built more on consensus of member states than a hegemony built up by dictatorships like Russia (which, let's be real, isn't ever gonna be a global hegemon) or China?
I actually wonder if she has a different stance on Israel but simply will not/cannot talk about it because she is also the VP and it's a "bad look to go against the boss," so to speak.