> remains an absurdly simplistic explanation of USD demand.
Are you willing to provide a more sophisticated explanation for USD demand? The biggest thing missing from my explanation is demand as an investment, or foreign demand to hedge risk. Which right now isn't huge, given interest rates are at 0.
> just an illustration of easy to intuit scenario where demand responds dynamically to supply
Sorry, I was not correct that you were using this as an "counterexample." My intended point was that you seem to be presenting this as an unexpected phenomenon (like how others present "latent demand"), which signals that you don't understand basic econ. (And if one isn't familiar with basic econ, how are they supposed to understand monetary policy, which is based on a second/third year econ (macro)?)
A person who understands economics would usually write: a rise in supply (with all else equal) causes the price of an ordinary good to drop, which shifts the equilibrium to a point where usually there is more demand. "Supply is intimately linked with demand" misses the mark completely! Supply isn't at all "intimately" linked with demand; it's linked with price, which is linked with demand.
That distinction is critically important. It's the difference between central-bank money printing being inflationary (as you seem to suggest) vs. it being stabilizing (which is what is actually happening). And it affects behavior: people don't start buying food when when they see the news reporting an increase in supply. People start buying food when that supply increase causes the price to fall. If the price doesn't fall, people don't buy the food!
The same happens with USD. People don't swap the USD to another currency because they see the central bank creating money (apart from Bitcoin-fanatics). Normal people start migrating off the USD to other assets when they see its value fall (inflation), which isn't happening at all (as measured by the CPI)!
> "Because you can't pay taxes with it! Hurrumph!".
This is a strawman of my argument. Not only can you not pay taxes with Bitcoin, you also can't use it to buy any goods and services. In fact, the only thing it seems like you can do with Bitcoin is to tell others that how Bitcoin is the future, and if they are a disbeliever, that they will be left behind claiming "with 100% theoretical consistency that everyone is a stupid lemming."