The CEO of Alibaba was kidnapped after he publicly criticized the government.
It's generally no surprise that there are not that many critical voices in a dictatorship.
Until they do. That’s the problem with dictatorship. If you can kill and swiftly replace the dictator, you become the dictator. What the masses believe is irrelevant.
You also don't hear much about corruption in Russia, because it's just everywhere and completely normalized.
Such countries play in a totally different league, at least for now. Takes a few years to reach dictatorship level. Current administration is trying hard, though.