Yes, they have been a very marginal “ally” for a long time.
If it’s the Kurds who are the marginal ally don’t you think Trump can make chicken salad out of chicken excrement? Carve out a small piece of land out of Syria, Iran, Iraq, and my favorite (drumstick). Then let our ‘ally’ Kurdistan fight over more territory. That’s 4 wars. Just make sure there’s enough weapons for everybody.