That sounds a little like saying, "Don't check my bank account balance, because I've got lots of things in motion and some of them are going to pay out big." Might be true but the balance still says a lot about your general posture, how aggressive/risky you are, how defensive.
Can you elaborate? National debt seems like one of the few relatively straightforward metrics one could use to understand the state's fiscal responsibility (or irresponsibility).
Yeah, I'm interested to learn more about signals, but the article seems to miss the whole point of brute-force state updates -- less cognitive complexity.