Crypto feels more like people buying art to me. You buy a painting with fiat and over time the value goes up (if you are lucky). Then you sell for fiat and can use that in the larger economy.
Of course crypto is easier to buy and sell than art but it also seems to be lacking the lifecycle that fiat has. Maybe when a country starts accepting tax payments in crypto then it will have a full lifecycle. Until then.
To hell with taxes on crypto. This is money without permission. That is its core feature.
EDIT
At present, it is more like a stock. It is literally a share in the blockchain infrastructure. The market determines the value of those shares and the infrastructure. Once the market has had more time for price discovery and more people have adopted the technology, it should stabilize.