Yes, cryptocurrencies are good if you want to finance illegal activity. However, since the vast majority of people are unable or unwilling to become international fugitives like Snowden, cryptocurrencies aren't especially useful as a way to post freely on twitter while retain your money against seizure by a hypothetical dystopian government.
You're assuming that financial censorship primarily targets illegal activity - it doesn't. The vast majority of financial censorship targets legal activity and persons, businesses and corporations who have not been charged by any government with any crime. And it's done by corporations pursuing political interests.
That's a long way from the claim that started this chain:
> in a slightly more dystopian reality -e.g. when we are forced to use CBDCs- the government might choose to block you from using your hard earned money because you posted a criticism of the president on twitter.
