Nah, it's disinformation. They want the west to think they object.
Most Chinese citizens don't like North Korea's Kim Jung-il either. It's not disinformation. The Chinese want North Korea to be pro-China, not some retarded agitator that goes around embarrassing China (and specifically China) internationally.
North Korea has two factions: the Kim faction and the pro-Chinese faction. Kim Jung-il every once in awhile goes and purges all the pro-Chinese Koreans out of the government and puts them in concentration camps. China wants to keep the North Korean state, but it hates Kim. It is hoping that when Kim dies, the North Korean government will gravitate toward the Chinese.
If you think this is all disinformation, then you are refusing to see the dynamics between China and North Korea. China hates being embarrassed (and by a turd like Kim Jung-il), it would never deliberately plan itself to be embarrassed.