That’s not what the article says.
Then what do you think it says?
Did you miss this part?
Conclusion
While rising interest rates are associated with higher borrowing costs for the federal government, the relationship is not linear. It depends not only on the current stock of debt but also on its composition, in particular the maturity structure.
While the cost of issuing short-term debt securities, such as Treasury bills, closely tracks the policy rate, this is not necessarily true for longer-term securities, such as notes or bonds, whose cost also depends on the term premium. This is especially relevant because longer-term securities (with a term over five years) represent over 70 percent of marketable federal debt outstanding.