I agree, we don't need Tether or Bitcoin backed fiat or, as you implied in your initial response, a U.S. Bitcoin Strategic reserve.

So how does the world look with every country, bank and company holding a strategic reserve.

Thus, every country using Bitcoin to back their currency.

Also, every country using Bitcoin to back their debt.

If no currencies fail because of this strategy, how does Bitcoin get adopted as a currency?

How does this work?

i.e. What happens when your enemies (banks and governments) use your tools for their benefit?