"A viable currency which has no privacy is no problem for any authoritarian state." - you shoehorn in one section, and you get the rest. Just like how Github is allowed in China because there's too many useful repos.
Discussion
Same way BTC is allowed in Turkey, the airport is full of advertisement for a BTC exchange - and at the same time you need to scan your passport to get access to the airport wifi.
It clearly shows that BTC is not a problem for governments, that should make people think when promoting it as a freedom technology.
Github is clearly a problem for China - they've tried to take down Github repos multiple times. But they can't enforce protocol-level bans on Git because it's too useful.