It's actually the opposite. Every comment not critical of China gets downvoted quickly.
Proof: comments on this article and other articles critical of China, remotely or overtly.
If you look at the comments in the thread that have been flag killed, they are mostly low quality comments on both sides of the issue.
And looking at downvoted comments, there doesn't seem to be much correlation at all between upvotes and whether the comment is critical of China.
Please have a look at the other reply I made in this thread, when someone mentioned that Li Keqiang Index and argued that it is a better indicator of China's real GDP growth, I listed recent figures to show that if Li Keqiang Index is actually more reliable, there would be higher real GDP growth. My cited numbers are from Caixin, which is considered as a pretty reliable private source.
What happened to my reply? My "low quality" comment is downvoted within seconds. I don't think China bashing comments are being treated the same way.
Rather than just blindly marking other people's replies as of "low quality", maybe you can share some more details on why my downvoted reply above is of low quality and how can I improve from that.
Oh, btw, with high confidence that this reply is going to be downvoted fast.
I generally don't downvote something unless they are, meaningless, offer no value to discussions or spreading wrong information that could easily be disproved.
And since I know it wasn't when I made my comment, I wasn't talking about your comment. Downvoting is different from flagging.
Enable viewing dead comments, scroll to the bottom, and tell me they aren't low quality.
Also 2/3 of the dead comments I see right now are anti-China comments.