This is a relevant point in terms of Western criticisms of Chinese censorship. The ultra-nationalists are being censored as much as the liberals, and when did you last hear an NGO earnestly complaining about that?
If you went to websites such as KDnet, you get the liberal viewpoints; if you went to websites such as WYZXSX, Strong Nation or Iron Blood, you get the ultra-nationalistic viewpoints.
Neither of these groups are actually supportive of the government. Tha Nationalist forums are hostile to what they perceive as westernization but also think that the CPC are a bunch of softies for not invading Taiwan right now. And like liberal or reformist opinion, nationalist expression is also liable to censorship.