I learned about this concept in college macroeconomics. I asked this exact question and the TA said “yeah I guess repaying debt is like destroying money” as if they had never thought of that before. The idea of lending money increasing the money supply is definitionally true.
And when debt is wiped out through bankruptcy that inflation remains.
> the TA said “yeah I guess repaying debt is like destroying money” as if they had never thought of that before
They shouldn't have been a TA. Modern money is destroyed in three ways: through taxation, defaults and the extinguishing of debts.