> if you sink to the 90th percentile of privilege from the 99th, you'll become a "second class human"

That isn't what the person you're responding to said at all. They were observing the discrimination against those who are not Han in China and extrapolating that it would apply to them as well in a China-centric world.

They don't want to be discriminated against. That's all that's being said. (Well also they're saying that they appreciate freedom of speech and some other stuff that China seems to be diametrically opposed to, but you didn't respond to that so I guess it's not relevant to my comment.)