What we should be more concerned about is the abolition of cash. That's very real, ongoing and potentially more damaging.
True, the abolition of physical fiat is a more pressing concern. With all our finances becoming mere digital records, we'll be more at the mercy of the bankers and the government than ever before. They can lock our accounts over the smallest things. Even worse, it would have a chilling effect on people. If you cannot economically survive outside this system, why you even voice out any dissent?
Assuming cryptocurrency are not the brainchild of the state, I can say it just came at the right time. If they ever force us to give up our cash, then we'll move our money to cryptos instead.