They don't need to be too smart to do that. It is only they have interest in and want to do this or not.
Maybe that's your opinion, but I wouldn't agree that knowledge is some universal thing that comes by itself, especially in a country that censors the internet like no other country in the world. You need to be smart in order to bypass such censorship, and not only smart in the sense that you know how to use VPN or TOR, but also that you know how to stay under the government's radar, given that China, like every communist country that exists or has existed, is not afraid of the most difficult punishments for those who are considered enemies of the state and the system.
They did not completely block all their citizens to access to real news, not censored ones. If citizens one, they can access to freedom. Freedom in news and freedom in their own banks by Bitcoin.
The fact that the average Chinese still lives in such a political system that limits basic human freedoms speaks volumes about how significant the influence of that same state is on society. Real changes are only possible if a critical mass of people is created who are aware that something is wrong, and it seems to me that the majority of Chinese people live in some parallel reality within their country. I didn't hear of a single protest when China banned Bitcoin trading or mining in a country of 1.4 billion people.