Way more people complain about this too, if you pay attention to all the US inflation and national debt anxieties. It’s clearly unsustainable and driving interest rates up steadily.

People complain about the imbalance between economy supply and economy demand leading to inflation and debt concerns.

The complaint isn’t that the economy is “circular”, how else could it work with 3 or more people engaged in commerce? Neither of those things get fixed on different ways to manage the money supply either, it’s not as if they didn’t have national debts or inflation while on the gold standard.