The problem with this reasoning is that instability, whether as the result of undermining governments or regional wars, has unpredictable outcomes. For example, overthrowing the democratically elected government of Iran seemed like a great idea to those in power in the U.S. at the time when we disagreed with Iran’s policies, but this decision turned around to bite us when that got overturned. So it is not in our material interests to promote instability, and I think that the current administration knows this, so to the extent it is supporting Israel with effectively no conditions on its actions I think that it is behaving irrationally rather than maliciously.
I can be glad that the Union won the U.S. Civil War and and ended slavery yet still consider it to be war crimes that they deliberately attacked civilians as part of Sherman’s March; no logic had been violated there.