It's possible that the same tool can be used either for, or against, democracy, depending on the environment. That's actually what most tools are like. Using cryptocurrency in an authoritarian state can help democratize the state, while using it in an already democratic state has a potential to do more harm than good. It's similar to violence: using it to kill off the ancien regime can (potentially) pave road towards democracy, while using it to put a non-elected person in charge in an already democratic state will shift the state away from democracy.

Disclaimer: I don't have any opinion on this, just reacting to the "completely illogical" comment.