Like the article said, average duration is around 5 years. So only a small part gets refinanced at higher rates each year. Since 2022, some has been getting refinanced higher and higher (and much high debt loads due to highest deficits ever).
In 3 years, the US govt will basically need to gut all federal spending by half if it doesnt touch non-discretionary social security, medicare, etc) and doesn't touch defense. Fucking gut Federal spending by half. Ho lee fuk