Russia shows that political will and/or technical incompetence can easily overlook these things.
I think the hardest thing for China is GitHub, they've gone back and forth on that one.
That's how you can tell when a person has grown up in a democracy with accountability to its people and also has over generalized about the rest of the world. Both China and Russia has historically shown a preference for the state over their populace. I'm not trying to knock those two countries because the willingness to do that can sometimes give certain disadvantaged states the ability to outlast or outfight their rivals. But one shouldn't assume one's own conditions are universal. There are many other viable options outside of one's own country.
They could go the other way and find an excuse to ban them then cite how these capitalist swamp countries are sheltering and fostering terrorists and criminals and people should use Chinese service providers. In other words censorship can be used to reach other goals, besides just controlling the flow of ideas.