Each time there is a shock in OECD countries, the public debt ratio rises and monetary policy becomes more expansionary: This dynamics is not sustainable

Each time there is a shock (2000-2002, 2008-2009, 2020 with coronavirus) in OECD countries, we see that: The public debt ratio rises; Monetary policy becomes more expansionary: rate cuts, increased money supply. This divergent dynamics is obviously unsustainable: one day, monetary policy will have to be normalised and part of the public debt will have to be cancelled in order to stop this divergence.