Virtual asset taxation issues. Isn't it cryptocurrency?

I feel like things like NFTs should be viewed differently,
but cryptocurrency, as the name implies, started as a form of currency.
As far as I know, profits from foreign exchange transactions in the current FX market are not taxed.
The key is how we define cryptocurrency.
If the day comes when it functions and is recognized as actual currency—as many Bitcoin enthusiasts hope—wouldn't it be strange if it suddenly became exempt from taxation then?