I agree with your points, but I don't think you are replying to the points that I made directly. I was specifically referring to the TSA rule on verifying identity without ID and its intention, not on car, trains, or how prevalent the requirement of ID is in China. My point is, in terms of ID requirements for air travel, there is not much difference between the two country.

Then again, I am totally used to people getting angry when I say China is not necessarily worse than US in some aspect regardless of right or wrong.

If you really want to be genuine, try to read my comments with a fresh state of mind and see what I am trying to convey.

Edit: maybe you also interpreted my comment wrongly? https://news.ycombinator.com/item?id=15318245