I don’t see the difference between the other sites, but there doesn’t seem to any harm in trying.

One thing about authoritarian/totalitarian governments is that they want to control all aspects of the county that they currently reside in with an iron fist. As a result, the people there are most likely restricted to following the current dictator or group of people in charge and are unwilling to step out of line due to the fear of consequences. Cryptocurrency can probably bypass that control Considering that a majority of places with dictators can still access the Internet via a VPN or other means they can use cryptocurrencies.
   
An example would be in China, considering that their government controls its economy and has a lot of restrictions on what people can and cannot do with the currency (RMB) that they use. Cryptocurrencies can bypass that control as they are not controlled by any government and can keep the identity of its users a secret when they do transactions this can result in people using cryptocurrency being able to freely trade without any restrictions on how much they use. As a result, cryptocurrencies allow people in oppressed regions to become freer as they are not restricted in terms of money and trade.