More than 2 billions of people live in authoritarian regimes where the government rules exist only to oppress the population and make it more easily controlled. Bitcoin gives them the option to maintain their property rights, avoid financial surveillance and money controls. Saying that crypto is only used for ponzi schemes is simply false and disingenuous.
I think ToR is the worst example you can use. Good in theory? Yes. In practice it is pedophile and drug honeypot with exit nodes run my the government with limited legitimate actual people using it.