Interesting theory. We are well past that being a serious risk though. Long term holder statistics say most coins are in the hands of true believers, or lost.
I won't lie and say I wouldn't sell my #bitcoin to them if they succeed. My sales would be a trickle to cover my expenses only after they drove the price so high I could retire in luxury.
I don't think even the US could get there though. It is sort of like the rocket ship fuel problem, any added fuel adds weight that requires more fuel. The dollars they print to buy bitcoin cause inflation raising the nominal $ value of my bitcoin. I don't care about that, I care about the goods I can get for my stack. The inflation they caused means I need to exchange for more dollars to get the same number of goods. I think the inflation perfectly balances the nominal price rise in #bitcoin and my stack goes nowhere against goods, so I don't sell.
Unless new bitcoiners join during the process or existing ones up their allocation. That would change the #bitcoin to goods exchange rate.
After the country that tried collapsed, carry on watching your stack of msats be worth a fortune in hard assets.