Low Cyclomatic Complexity is absolutely the result of careful management of interfaces in the system. The inverse is also true that high CC is a sign of poorly

Low Cyclomatic Complexity is absolutely the result of careful management of interfaces in the system. The inverse is also true that high CC is a sign of poorly structure code, which tends towards spaghetti. Thus I agree it's related to the premise of detecting spaghetti code. There's nice CC visualizers that can show you at a glance areas that have higher complexity. Sometimes that complexity is related to the problem domain, but sometimes it comes from overhead of poor system architecture.