Protecting the wealthy? You have no clue about real problems of people resisting the dictatorship. Right now cryptocurrencies are the only reliable and untraceable way for Russian dissidents and underground to fund themselves. The key features are anonymousness and permission lessness, and Bitcoin/Monero can be turned into hard cash quite easily. Oh and it also allows you to receive funds from abroad with zero oversight, avoid paying taxes, etc.

If there will ever be an uprising, it'll be funded with nothing else but cryptocurrency.

So yes, cryptocurrencies are worth every watt of energy they use.