I agree. Its not the same as cash. Its the same as a country that allows 2 diff currencies. where one is bitcoin and the other is created by individuals / centralised systems, with exchange rates depending on that individual.

It will reduce the monetary flow of one currency, and have exchange rate volatility.

That's not to say its a bad innovation, but it has its flaws. To be extremely sensitive talking about its pros and cons is dangerous and worrying.

However if this innovation can truly acknowledges its pros and cons and understand the world and its use cases, then it will be able to understand its application. Only then it can market itself and find its market fit.