You rightly point out the debasement of money as the main cause of Rome’s destruction.
Money represents the structure of society - nearly every decision we make, arises from judgements about relative scarcity and value of things (prices) and our own resources. these are all measure by MONEY.
Exactly like the USA today - all other problems arose FROM that.
Almost no one talks about the long-term social, demographic and even religious/moral consequences of Government (and its cronies) being able to manipulate and debase money
I read Gibbon’s Fall of the Roman Empire many years ago and he went on in detail how inflation was a root cause of the fall. I was lazy today and just googled it.