It's a hypothetical. If a country dumped their X, Y, or Z on the market it would without a doubt affect it's price. A smaller continuous stream of supply affects it over a longer time scale. Not even sure how that is debatable. There is more out there to satisfy demand all things equal.

But they do work for it. You can't get it without mining. You can't poof it out of thin air. Unless you're trying to say PoW isn't people working for Bitcoin?