most of debt is issued for re-financing of existing debt, not for new debt repo markets are the backbone of that. and since they're collateralized loans - there is a huge demand for collateral/safe assets
transition into multipolarity brings risks & volatility into financial markets some FX currencies & bonds go up - others down the demand for safe assets is not going away anywhere the debt still needs to be refinanced ๐คทโโ๏ธ