The politics of C3 is mixture of older anarcho communist hackers and contemporary progressive statists. So against authoritarian government, if it's right-wing, and privacy to protect against surveillance capitalism (rather than from the state).
So things like bitcoin are not liked as they're outside of the state and money should be a function of a benevolent left-wing state.
I'm pretty sure you are making a straw man here. Bitcoin is disliked because it's hyper-capitalist and a huge waste of energy, not because it isn't the state.
Those two reasons are also given but the deeper belief is that private or extra statal monies shouldn't exist. Like monero draws the same ire despite it being outside of the crypto trading and financial industry world as well as low energy usage.