And the "tethered to the dollar" part is important.
They are basically liquidity/risk discounted dollars, as are many of these examples of "buying power".
No one is tethering their Rolex price to BTC.
No one is tethering their home purchase budget to BTC.
Why?
It's all tethered to your income, in dollars, and your savings presumably mostly in dollars as well.
Even "jug of water in the desert" is tethered more to dollars than BTC because what are you more likely to have in your pocket, and why?
Dollars are tethered to the government taxing us in dollars, so we get paid in dollars, and our government has nukes & aircraft carriers and such.
Everything then gets tethered to it because thats what we get paid & save in.
BTC is tethered to nothing, and there is no natural value you can back into such that you can justify any price level of it.
Other than its usefulness as "untraceable" (what people think, but not what is true.. it is more like "unblockable") cash, and for money laundering/drugs.. it is a trading instrument for punters.