“The root cause is America’s printed, fiat currency, issued by a central political/government authority.”
We have had a purely fiat currency since Nixon closed the gold window in 1971.
If your “root theory” idea was correct there would have been no Reagan prosperity followed by its echo lasting into the 1990s.
Volker tamed inflation in the early 80s with long term rates of 15%. But he did so with a debt/GDP of 30% - not at 124% where it is now. Reagans prosperity came with falling interest rates, but also large budget deficits and large current account deficits.
The same interest would be absolutely impossible today. We have blown such a debt bubble with our fiat, printed currency, the Government would be bankrupted.