Indeed. The whole criticism of the ICC comes from the viewpoint that Israel has a functioning, independent judiciary able to sentence Netanyahu for war crimes, and therefore the ICC shouldn’t intervene.
I have no idea if that is true, but the fact that it hasn’t happened yet makes me feel like it might very well not be.
The US makes the case that Israel has a functioning judicial system, not the ICC. The ICC and the UN makes the opposite case, and correctly so, I would say.