[stephen_g]

Yes, understand what the parent is putting forward is a fringe theory. Some schools of economics like Austrian economics are obsessed with the money supply and ignore other factors that clearly matter a lot.

[thaumasiotes]

Before you describe something as a "fringe theory", you might want to check whether it is taught by major textbooks in the field.

(In this case, try reading https://www.macmillanlearning.com/college/us/product/Macroec... )