Democracy is only ever going to be as good as those who are involved in it. If the majority want to vote for petty, ignorant and/or self-serving means then it is going to happen (even in crypto-land). In our societies people rely on the constitution to protect them from abuses of the majority....as much good as that seems to be doing!
For instance, if the Masternodes of DASH decided that they were going to increase the block reward for themselves then it could happen to the detriment of the DASH Users and Miners who aren't Masternodes. The only recourse for the Users and Miners would be to sell and exit the system. I guess in your Baptist church example you would move to a new locale to avoid the tithe, but I don't see a lot of difference between these two examples from a conceptual or ideological perspective.
If Dash was the only currency permitted to South Australians; litecoin the only one for NT and doge had the monopoly in WA, then I'd have as much an issue with crypto's as I do with states.
You should be able to end relationships you don't want, without having to leave somebody else's imaginary parish.