People may not trust the government (and I say this from the UK, so I appreciate I'm still relatively lucky all things considered), but in terms of evading Government controls, I can't believe we won't see governments thinking about this if more people are choosing to find ways around obscuring their income and contributions to the things that keep society from completely falling apart.
FWIW - not arguing against cryptocurrency, just positing idea that the whole my-finances-are-secret bank-yourself crypto utopia might not be all that.