I (and many others) greatly prefer Bitcoin to fiat. We work for Bitcoin. We pay people in Bitcoin. We do not feel safe with money in the bank. Having to exchange Bitcoin for gift cards or fiat seconds before SOME transactions does not make Bitcoin backed by fiat. We are always exchanging with others who understand the value of Bitcoin. The liquidity is proof that there are many such people.

All you are really saying is that you believe the demand & liquidity will collapse if the dollar collapses. But the people who understand Bitcoin do not go away. In fact many people tend to suddenly act on what they have heard Bitcoiners saying for years when the problems become more obvious (see Bitcoin price action in 2020). And evidence from other countries also seems to prove this because we see demand increase during other fiat collapses. The increasing number of people & places that accept Bitcoin directly before the storm will thrive & prevent total disaster.

Where can you spend your gold now? Where can you even buy or earn gold without paying a premium over spot & where can you trade it for better than 25% under spot? Gold's liquidity is horrible.

Layered money & The Fiat Standard are both books that you might find helpful.