I agree that its fine to point out problems you've observed from living in China.  Certainly no country is beyond criticism.  I have been reporting the other side of the coin in my posts simply to balance out the conversation.  I have a long list of negative stories from 10 years in Shanghai.  Some are absolutely shocking.  But I have an even longer list of positive things to say.  I suspect most making negative posts here have little to no direct knowledge of daily life in China.